1264636107 has 12 divisors (see below), whose sum is σ = 2087653360. Its totient is φ = 722649168.

The previous prime is 1264636073. The next prime is 1264636133. The reversal of 1264636107 is 7016364621.

It is a happy number.

1264636107 is a `hidden beast` number, since 1 + 2 + 6 + 4 + 636 + 10 + 7 = 666.

It is not a de Polignac number, because 1264636107 - 2¹⁵ = 1264603339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1264636907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10036732 + ... + 10036857.

Almost surely, 2^1264636107 is an apocalyptic number.

1264636107 is a deficient number, since it is larger than the sum of its proper divisors (823017253).

1264636107 is a wasteful number, since it uses less digits than its factorization.

1264636107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20073602 (or 20073599 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 1264636107 is about 35561.7224976519. The cubic root of 1264636107 is about 1081.4053797797.

The spelling of 1264636107 in words is "one billion, two hundred sixty-four million, six hundred thirty-six thousand, one hundred seven".