1264566988 has 12 divisors (see below), whose sum is σ = 2233295680. Its totient is φ = 626482512.

The previous prime is 1264566971. The next prime is 1264566991. The reversal of 1264566988 is 8896654621.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1449756 + ... + 1450627.

Almost surely, 2^1264566988 is an apocalyptic number.

It is an amenable number.

1264566988 is a deficient number, since it is larger than the sum of its proper divisors (968728692).

1264566988 is a wasteful number, since it uses less digits than its factorization.

1264566988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2900496 (or 2900494 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 55.

The square root of 1264566988 is about 35560.7506669924. The cubic root of 1264566988 is about 1081.3856779277.

The spelling of 1264566988 in words is "one billion, two hundred sixty-four million, five hundred sixty-six thousand, nine hundred eighty-eight".