1264801608 has 64 divisors (see below), whose sum is σ = 4015248000. Its totient is φ = 361371456.

The previous prime is 1264801607. The next prime is 1264801609. The reversal of 1264801608 is 8061084621.

1264801608 is a `hidden beast` number, since 1 + 2 + 6 + 48 + 0 + 1 + 608 = 666.

It is an interprime number because it is at equal distance from previous prime (1264801607) and next prime (1264801609).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1264801607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 416743 + ... + 419766.

It is an arithmetic number, because the mean of its divisors is an integer number (62738250).

Almost surely, 2^1264801608 is an apocalyptic number.

1264801608 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1264801608 is an abundant number, since it is smaller than the sum of its proper divisors (2750446392).

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

1264801608 is a wasteful number, since it uses less digits than its factorization.

1264801608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836531 (or 836521 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 1264801608 is about 35564.0493757390. The cubic root of 1264801608 is about 1081.4525516800.

The spelling of 1264801608 in words is "one billion, two hundred sixty-four million, eight hundred one thousand, six hundred eight".