1264425858 has 24 divisors (see below), whose sum is σ = 2748410496. Its totient is φ = 420118200.

The previous prime is 1264425829. The next prime is 1264425863. The reversal of 1264425858 is 8585244621.

1264425858 is a `hidden beast` number, since 1 + 2 + 64 + 4 + 2 + 585 + 8 = 666.

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, 107338 + ... + 118533.

It is an arithmetic number, because the mean of its divisors is an integer number (114517104).

Almost surely, 2^1264425858 is an apocalyptic number.

1264425858 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1264425858 is an abundant number, since it is smaller than the sum of its proper divisors (1483984638).

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

1264425858 is a wasteful number, since it uses less digits than its factorization.

1264425858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226190 (or 226187 counting only the distinct ones).

The product of its digits is 614400, while the sum is 45.

The square root of 1264425858 is about 35558.7662609377. The cubic root of 1264425858 is about 1081.3454476512.

The spelling of 1264425858 in words is "one billion, two hundred sixty-four million, four hundred twenty-five thousand, eight hundred fifty-eight".