1868338864 has 20 divisors (see below), whose sum is σ = 4137036304. Its totient is φ = 800716608.

The previous prime is 1868338853. The next prime is 1868338897. The reversal of 1868338864 is 4688338681.

It is a super-2 number, since 2×1868338864² = 6981380221465620992, which contains 22 as substring.

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, 8340687 + ... + 8340910.

Almost surely, 2^1868338864 is an apocalyptic number.

1868338864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1868338864 is an abundant number, since it is smaller than the sum of its proper divisors (2268697440).

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

1868338864 is a wasteful number, since it uses less digits than its factorization.

1868338864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16681612 (or 16681606 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 55.

The square root of 1868338864 is about 43224.2855811406. The cubic root of 1868338864 is about 1231.6440579367.

The spelling of 1868338864 in words is "one billion, eight hundred sixty-eight million, three hundred thirty-eight thousand, eight hundred sixty-four".