2957644397 has 2 divisors, whose sum is σ = 2957644398. Its totient is φ = 2957644396.

The previous prime is 2957644381. The next prime is 2957644433. The reversal of 2957644397 is 7934467592.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1947103876 + 1010540521 = 44126^2 + 31789^2 .

It is a cyclic number.

It is not a de Polignac number, because 2957644397 - 2⁴ = 2957644381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2957644337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1478822198 + 1478822199.

It is an arithmetic number, because the mean of its divisors is an integer number (1478822199).

Almost surely, 2^2957644397 is an apocalyptic number.

It is an amenable number.

2957644397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2957644397 is an equidigital number, since it uses as much as digits as its factorization.

2957644397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11430720, while the sum is 56.

The square root of 2957644397 is about 54384.2293040915. The cubic root of 2957644397 is about 1435.4298909104.

The spelling of 2957644397 in words is "two billion, nine hundred fifty-seven million, six hundred forty-four thousand, three hundred ninety-seven".