1264863996 has 36 divisors (see below), whose sum is σ = 3487959384. Its totient is φ = 383292000.

The previous prime is 1264863983. The next prime is 1264864061. The reversal of 1264863996 is 6993684621.

1264863996 is a `hidden beast` number, since 126 + 486 + 39 + 9 + 6 = 666.

1264863996 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

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, 1596655 + ... + 1597446.

Almost surely, 2^1264863996 is an apocalyptic number.

It is an amenable number.

1264863996 is an abundant number, since it is smaller than the sum of its proper divisors (2223095388).

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

1264863996 is a wasteful number, since it uses less digits than its factorization.

1264863996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3194122 (or 3194117 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 54.

The square root of 1264863996 is about 35564.9264866385. The cubic root of 1264863996 is about 1081.4703327433.

The spelling of 1264863996 in words is "one billion, two hundred sixty-four million, eight hundred sixty-three thousand, nine hundred ninety-six".