2149156631 has 2 divisors, whose sum is σ = 2149156632. Its totient is φ = 2149156630.

The previous prime is 2149156579. The next prime is 2149156649. The reversal of 2149156631 is 1366519412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2149156631 - 2²⁶ = 2082047767 is a prime.

It is a super-2 number, since 2×2149156631² = 9237748449142540322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2149156651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074578315 + 1074578316.

It is an arithmetic number, because the mean of its divisors is an integer number (1074578316).

Almost surely, 2^2149156631 is an apocalyptic number.

2149156631 is a deficient number, since it is larger than the sum of its proper divisors (1).

2149156631 is an equidigital number, since it uses as much as digits as its factorization.

2149156631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 38.

The square root of 2149156631 is about 46358.9973036519. The cubic root of 2149156631 is about 1290.4940981281.

The spelling of 2149156631 in words is "two billion, one hundred forty-nine million, one hundred fifty-six thousand, six hundred thirty-one".