2164925431 has 2 divisors, whose sum is σ = 2164925432. Its totient is φ = 2164925430.

The previous prime is 2164925387. The next prime is 2164925459. The reversal of 2164925431 is 1345294612.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2164925431 - 2⁹ = 2164924919 is a prime.

It is a super-2 number, since 2×2164925431² = 9373804243581071522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2164925461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082462715 + 1082462716.

It is an arithmetic number, because the mean of its divisors is an integer number (1082462716).

Almost surely, 2^2164925431 is an apocalyptic number.

2164925431 is a deficient number, since it is larger than the sum of its proper divisors (1).

2164925431 is an equidigital number, since it uses as much as digits as its factorization.

2164925431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 37.

The square root of 2164925431 is about 46528.7591818222. The cubic root of 2164925431 is about 1293.6426162251.

The spelling of 2164925431 in words is "two billion, one hundred sixty-four million, nine hundred twenty-five thousand, four hundred thirty-one".