38213710957 has 2 divisors, whose sum is σ = 38213710958. Its totient is φ = 38213710956.

The previous prime is 38213710949. The next prime is 38213711021. The reversal of 38213710957 is 75901731283.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37669375396 + 544335561 = 194086^2 + 23331^2 .

It is a cyclic number.

It is not a de Polignac number, because 38213710957 - 2³ = 38213710949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38213710357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19106855478 + 19106855479.

It is an arithmetic number, because the mean of its divisors is an integer number (19106855479).

Almost surely, 2^38213710957 is an apocalyptic number.

It is an amenable number.

38213710957 is a deficient number, since it is larger than the sum of its proper divisors (1).

38213710957 is an equidigital number, since it uses as much as digits as its factorization.

38213710957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317520, while the sum is 46.

The spelling of 38213710957 in words is "thirty-eight billion, two hundred thirteen million, seven hundred ten thousand, nine hundred fifty-seven".