1264373136 has 60 divisors (see below), whose sum is σ = 3810685788. Its totient is φ = 389037312.

The previous prime is 1264373087. The next prime is 1264373153. The reversal of 1264373136 is 6313734621.

1264373136 is a `hidden beast` number, since 1 + 2 + 643 + 7 + 3 + 1 + 3 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 147476736 + 1116896400 = 12144^2 + 33420^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1264373136.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 335835 + ... + 339578.

Almost surely, 2^1264373136 is an apocalyptic number.

1264373136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1264373136 is an abundant number, since it is smaller than the sum of its proper divisors (2546312652).

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

1264373136 is a wasteful number, since it uses less digits than its factorization.

1264373136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675440 (or 675431 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 1264373136 is about 35558.0249170282. The cubic root of 1264373136 is about 1081.3304180400.

The spelling of 1264373136 in words is "one billion, two hundred sixty-four million, three hundred seventy-three thousand, one hundred thirty-six".