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3815040893 = 4318851603
BaseRepresentation
bin1110001101100100…
…1110011101111101
3100211212200011020212
43203121032131331
530303122302033
61430321322205
7163353212126
oct34331163575
910755604225
103815040893
111688544764
128a5796365
1348a502561
1428296904d
15174ddc748
hexe364e77d

3815040893 has 4 divisors (see below), whose sum is σ = 3823892928. Its totient is φ = 3806188860.

The previous prime is 3815040871. The next prime is 3815040899. The reversal of 3815040893 is 3980405183.

3815040893 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3980405183 = 28114165143.

It is a cyclic number.

It is not a de Polignac number, because 3815040893 - 26 = 3815040829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3815040893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3815040899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4425371 + ... + 4426232.

It is an arithmetic number, because the mean of its divisors is an integer number (955973232).

Almost surely, 23815040893 is an apocalyptic number.

It is an amenable number.

3815040893 is a deficient number, since it is larger than the sum of its proper divisors (8852035).

3815040893 is an equidigital number, since it uses as much as digits as its factorization.

3815040893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8852034.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 3815040893 is about 61766.0172991589. The cubic root of 3815040893 is about 1562.5469151823.

The spelling of 3815040893 in words is "three billion, eight hundred fifteen million, forty thousand, eight hundred ninety-three".

Divisors: 1 431 8851603 3815040893