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38846923213 = 75549560459
BaseRepresentation
bin100100001011011101…
…010000000111001101
310201021022100011111211
4210023131100013031
51114024303020323
625502424214421
72543443253620
oct441335200715
9121238304454
1038846923213
111552509141a
12764190a411
133881209bc7
141c473b3db7
15102566970d
hex90b7501cd

38846923213 has 4 divisors (see below), whose sum is σ = 44396483680. Its totient is φ = 33297362748.

The previous prime is 38846923211. The next prime is 38846923229. The reversal of 38846923213 is 31232964883.

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: 31232964883 = 191643840257.

It is a cyclic number.

It is not a de Polignac number, because 38846923213 - 21 = 38846923211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38846923211) 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, 2774780223 + ... + 2774780236.

It is an arithmetic number, because the mean of its divisors is an integer number (11099120920).

Almost surely, 238846923213 is an apocalyptic number.

It is an amenable number.

38846923213 is a deficient number, since it is larger than the sum of its proper divisors (5549560467).

38846923213 is an equidigital number, since it uses as much as digits as its factorization.

38846923213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5549560466.

The product of its digits is 1492992, while the sum is 49.

The spelling of 38846923213 in words is "thirty-eight billion, eight hundred forty-six million, nine hundred twenty-three thousand, two hundred thirteen".

Divisors: 1 7 5549560459 38846923213