38956157 has 2 divisors, whose sum is σ = 38956158. Its totient is φ = 38956156.

The previous prime is 38956147. The next prime is 38956187. The reversal of 38956157 is 75165983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26977636 + 11978521 = 5194^2 + 3461^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38956157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38956117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19478078 + 19478079.

It is an arithmetic number, because the mean of its divisors is an integer number (19478079).

Almost surely, 2^38956157 is an apocalyptic number.

It is an amenable number.

38956157 is a deficient number, since it is larger than the sum of its proper divisors (1).

38956157 is an equidigital number, since it uses as much as digits as its factorization.

38956157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 44.

The square root of 38956157 is about 6241.4867619823. The cubic root of 38956157 is about 338.9940189743.

The spelling of 38956157 in words is "thirty-eight million, nine hundred fifty-six thousand, one hundred fifty-seven".