38970157 has 2 divisors, whose sum is σ = 38970158. Its totient is φ = 38970156.

The previous prime is 38970133. The next prime is 38970161. The reversal of 38970157 is 75107983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22857961 + 16112196 = 4781^2 + 4014^2 .

It is a cyclic number.

It is not a de Polignac number, because 38970157 - 2¹¹ = 38968109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38970167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19485078 + 19485079.

It is an arithmetic number, because the mean of its divisors is an integer number (19485079).

Almost surely, 2^38970157 is an apocalyptic number.

It is an amenable number.

38970157 is a deficient number, since it is larger than the sum of its proper divisors (1).

38970157 is an equidigital number, since it uses as much as digits as its factorization.

38970157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 38970157 is about 6242.6081888903. The cubic root of 38970157 is about 339.0346231493.

The spelling of 38970157 in words is "thirty-eight million, nine hundred seventy thousand, one hundred fifty-seven".