1264558164 has 24 divisors (see below), whose sum is σ = 3006309600. Its totient is φ = 413565984.

The previous prime is 1264558157. The next prime is 1264558181. The reversal of 1264558164 is 4618554621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 993514 + ... + 994785.

It is an arithmetic number, because the mean of its divisors is an integer number (125262900).

Almost surely, 2^1264558164 is an apocalyptic number.

It is an amenable number.

1264558164 is an abundant number, since it is smaller than the sum of its proper divisors (1741751436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1264558164 is a wasteful number, since it uses less digits than its factorization.

1264558164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988359 (or 1988357 counting only the distinct ones).

The product of its digits is 230400, while the sum is 42.

The square root of 1264558164 is about 35560.6265974040. The cubic root of 1264558164 is about 1081.3831626611.

The spelling of 1264558164 in words is "one billion, two hundred sixty-four million, five hundred fifty-eight thousand, one hundred sixty-four".