2656037957 has 2 divisors, whose sum is σ = 2656037958. Its totient is φ = 2656037956.

The previous prime is 2656037927. The next prime is 2656037963. The reversal of 2656037957 is 7597306562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1651528321 + 1004509636 = 40639^2 + 31694^2 .

It is a cyclic number.

It is not a de Polignac number, because 2656037957 - 2⁸ = 2656037701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2656037927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1328018978 + 1328018979.

It is an arithmetic number, because the mean of its divisors is an integer number (1328018979).

Almost surely, 2^2656037957 is an apocalyptic number.

It is an amenable number.

2656037957 is a deficient number, since it is larger than the sum of its proper divisors (1).

2656037957 is an equidigital number, since it uses as much as digits as its factorization.

2656037957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2381400, while the sum is 50.

The square root of 2656037957 is about 51536.7631599036. The cubic root of 2656037957 is about 1384.8777115764.

The spelling of 2656037957 in words is "two billion, six hundred fifty-six million, thirty-seven thousand, nine hundred fifty-seven".