2492977657 has 2 divisors, whose sum is σ = 2492977658. Its totient is φ = 2492977656.

The previous prime is 2492977633. The next prime is 2492977679. The reversal of 2492977657 is 7567792942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1300035136 + 1192942521 = 36056^2 + 34539^2 .

It is a cyclic number.

It is not a de Polignac number, because 2492977657 - 2¹¹ = 2492975609 is a prime.

It is not a weakly prime, because it can be changed into another prime (2492977457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1246488828 + 1246488829.

It is an arithmetic number, because the mean of its divisors is an integer number (1246488829).

Almost surely, 2^2492977657 is an apocalyptic number.

It is an amenable number.

2492977657 is a deficient number, since it is larger than the sum of its proper divisors (1).

2492977657 is an equidigital number, since it uses as much as digits as its factorization.

2492977657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13335840, while the sum is 58.

The square root of 2492977657 is about 49929.7271873180. The cubic root of 2492977657 is about 1355.9368451615.

The spelling of 2492977657 in words is "two billion, four hundred ninety-two million, nine hundred seventy-seven thousand, six hundred fifty-seven".