1264801388 has 12 divisors (see below), whose sum is σ = 2213769600. Its totient is φ = 632295792.

The previous prime is 1264801357. The next prime is 1264801397. The reversal of 1264801388 is 8831084621.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5045 + ... + 50547.

It is an arithmetic number, because the mean of its divisors is an integer number (184480800).

Almost surely, 2^1264801388 is an apocalyptic number.

It is an amenable number.

1264801388 is a deficient number, since it is larger than the sum of its proper divisors (948968212).

1264801388 is a wasteful number, since it uses less digits than its factorization.

1264801388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52456 (or 52454 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 1264801388 is about 35564.0462827277. The cubic root of 1264801388 is about 1081.4524889772.

The spelling of 1264801388 in words is "one billion, two hundred sixty-four million, eight hundred one thousand, three hundred eighty-eight".