38697295657 has 2 divisors, whose sum is σ = 38697295658. Its totient is φ = 38697295656.

The previous prime is 38697295633. The next prime is 38697295667. The reversal of 38697295657 is 75659279683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22747878976 + 15949416681 = 150824^2 + 126291^2 .

It is a cyclic number.

It is not a de Polignac number, because 38697295657 - 2²⁷ = 38563077929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38697295592 and 38697295601.

It is not a weakly prime, because it can be changed into another prime (38697295627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19348647828 + 19348647829.

It is an arithmetic number, because the mean of its divisors is an integer number (19348647829).

Almost surely, 2^38697295657 is an apocalyptic number.

It is an amenable number.

38697295657 is a deficient number, since it is larger than the sum of its proper divisors (1).

38697295657 is an equidigital number, since it uses as much as digits as its factorization.

38697295657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 171460800, while the sum is 67.

The spelling of 38697295657 in words is "thirty-eight billion, six hundred ninety-seven million, two hundred ninety-five thousand, six hundred fifty-seven".