1264656330 has 48 divisors (see below), whose sum is σ = 3757837824. Its totient is φ = 289064160.

The previous prime is 1264656329. The next prime is 1264656347. The reversal of 1264656330 is 336564621.

1264656330 is a `hidden beast` number, since 1 + 2 + 64 + 6 + 563 + 30 = 666.

1264656330 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1003066 + ... + 1004325.

It is an arithmetic number, because the mean of its divisors is an integer number (78288288).

Almost surely, 2^1264656330 is an apocalyptic number.

1264656330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1264656330 is an abundant number, since it is smaller than the sum of its proper divisors (2493181494).

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

1264656330 is a wasteful number, since it uses less digits than its factorization.

1264656330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2007411 (or 2007408 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 1264656330 is about 35562.0068331358. The cubic root of 1264656330 is about 1081.4111440583.

The spelling of 1264656330 in words is "one billion, two hundred sixty-four million, six hundred fifty-six thousand, three hundred thirty".