1868456364 has 12 divisors (see below), whose sum is σ = 4359731544. Its totient is φ = 622818784.

The previous prime is 1868456357. The next prime is 1868456407. The reversal of 1868456364 is 4636548681.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1868456364² = 6982258368344200992, which contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

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, 77852337 + ... + 77852360.

It is an arithmetic number, because the mean of its divisors is an integer number (363310962).

Almost surely, 2^1868456364 is an apocalyptic number.

It is an amenable number.

1868456364 is an abundant number, since it is smaller than the sum of its proper divisors (2491275180).

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

1868456364 is a wasteful number, since it uses less digits than its factorization.

1868456364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155704704 (or 155704702 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 51.

The square root of 1868456364 is about 43225.6447493846. The cubic root of 1868456364 is about 1231.6698767975.

The spelling of 1868456364 in words is "one billion, eight hundred sixty-eight million, four hundred fifty-six thousand, three hundred sixty-four".