2639125369 has 2 divisors, whose sum is σ = 2639125370. Its totient is φ = 2639125368.

The previous prime is 2639125337. The next prime is 2639125397. The reversal of 2639125369 is 9635219362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2308322025 + 330803344 = 48045^2 + 18188^2 .

It is a cyclic number.

It is not a de Polignac number, because 2639125369 - 2⁵ = 2639125337 is a prime.

It is a super-2 number, since 2×2639125369² = 13929965426598772322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2639125469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1319562684 + 1319562685.

It is an arithmetic number, because the mean of its divisors is an integer number (1319562685).

Almost surely, 2^2639125369 is an apocalyptic number.

It is an amenable number.

2639125369 is a deficient number, since it is larger than the sum of its proper divisors (1).

2639125369 is an equidigital number, since it uses as much as digits as its factorization.

2639125369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 524880, while the sum is 46.

The square root of 2639125369 is about 51372.4183682256. The cubic root of 2639125369 is about 1381.9320011040.

The spelling of 2639125369 in words is "two billion, six hundred thirty-nine million, one hundred twenty-five thousand, three hundred sixty-nine".