269638631 has 2 divisors, whose sum is σ = 269638632. Its totient is φ = 269638630.

The previous prime is 269638627. The next prime is 269638669. The reversal of 269638631 is 136836962.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 269638631 - 2² = 269638627 is a prime.

It is a super-2 number, since 2×269638631² = 145409982655108322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (269631631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134819315 + 134819316.

It is an arithmetic number, because the mean of its divisors is an integer number (134819316).

Almost surely, 2^269638631 is an apocalyptic number.

269638631 is a deficient number, since it is larger than the sum of its proper divisors (1).

269638631 is an equidigital number, since it uses as much as digits as its factorization.

269638631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 44.

The square root of 269638631 is about 16420.6769348891. The cubic root of 269638631 is about 646.0419279339.

The spelling of 269638631 in words is "two hundred sixty-nine million, six hundred thirty-eight thousand, six hundred thirty-one".