38900053681 has 4 divisors (see below), whose sum is σ = 39634017012. Its totient is φ = 38166090352.

The previous prime is 38900053649. The next prime is 38900053723. The reversal of 38900053681 is 18635000983.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33066149281 + 5833904400 = 181841^2 + 76380^2 .

It is a cyclic number.

It is not a de Polignac number, because 38900053681 - 2⁵ = 38900053649 is a prime.

It is a super-2 number, since 2×38900053681² (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 (38900053601) 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, 366981586 + ... + 366981691.

It is an arithmetic number, because the mean of its divisors is an integer number (9908504253).

Almost surely, 2^38900053681 is an apocalyptic number.

It is an amenable number.

38900053681 is a deficient number, since it is larger than the sum of its proper divisors (733963331).

38900053681 is an equidigital number, since it uses as much as digits as its factorization.

38900053681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733963330.

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 38900053681 in words is "thirty-eight billion, nine hundred million, fifty-three thousand, six hundred eighty-one".