38931332537 has 2 divisors, whose sum is σ = 38931332538. Its totient is φ = 38931332536.

The previous prime is 38931332521. The next prime is 38931332543. The reversal of 38931332537 is 73523313983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23786584441 + 15144748096 = 154229^2 + 123064^2 .

It is a cyclic number.

It is not a de Polignac number, because 38931332537 - 2⁴ = 38931332521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38931332491 and 38931332500.

It is not a weakly prime, because it can be changed into another prime (38931332507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19465666268 + 19465666269.

It is an arithmetic number, because the mean of its divisors is an integer number (19465666269).

Almost surely, 2^38931332537 is an apocalyptic number.

It is an amenable number.

38931332537 is a deficient number, since it is larger than the sum of its proper divisors (1).

38931332537 is an equidigital number, since it uses as much as digits as its factorization.

38931332537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 47.

The spelling of 38931332537 in words is "thirty-eight billion, nine hundred thirty-one million, three hundred thirty-two thousand, five hundred thirty-seven".