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38471498809 = 73528199793
BaseRepresentation
bin100011110101000101…
…000111110000111001
310200022010220122001021
4203311011013300321
51112242200430214
625401253422441
72531234226052
oct436505076071
9120263818037
1038471498809
1115352181517
12755803aa21
1338214c15a3
141c0d5a9729
15100270c924
hex8f5147c39

38471498809 has 8 divisors (see below), whose sum is σ = 39006281192. Its totient is φ = 37936926720.

The previous prime is 38471498801. The next prime is 38471498929. The reversal of 38471498809 is 90889417483.

38471498809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1253372409 + 37218126400 = 35403^2 + 192920^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38471498809 - 23 = 38471498801 is a prime.

It is a super-2 number, since 2×384714988092 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38471498801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335617 + ... + 435409.

It is an arithmetic number, because the mean of its divisors is an integer number (4875785149).

Almost surely, 238471498809 is an apocalyptic number.

It is an amenable number.

38471498809 is a deficient number, since it is larger than the sum of its proper divisors (534782383).

38471498809 is an equidigital number, since it uses as much as digits as its factorization.

38471498809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105147.

The product of its (nonzero) digits is 13934592, while the sum is 61.

The spelling of 38471498809 in words is "thirty-eight billion, four hundred seventy-one million, four hundred ninety-eight thousand, eight hundred nine".

Divisors: 1 73 5281 99793 385513 7284889 527006833 38471498809