38089931261 has 4 divisors (see below), whose sum is σ = 38145700512. Its totient is φ = 38034162012.

The previous prime is 38089931203. The next prime is 38089931263. The reversal of 38089931261 is 16213998083.

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: 16213998083 = 2381 ⋅6809743.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38089931261 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 (38089931263) 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, 27883601 + ... + 27884966.

It is an arithmetic number, because the mean of its divisors is an integer number (9536425128).

Almost surely, 2^38089931261 is an apocalyptic number.

It is an amenable number.

38089931261 is a deficient number, since it is larger than the sum of its proper divisors (55769251).

38089931261 is an equidigital number, since it uses as much as digits as its factorization.

38089931261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55769250.

The product of its (nonzero) digits is 559872, while the sum is 50.

The spelling of 38089931261 in words is "thirty-eight billion, eighty-nine million, nine hundred thirty-one thousand, two hundred sixty-one".