18377379400 has 24 divisors (see below), whose sum is σ = 42727407570. Its totient is φ = 7350951680.

The previous prime is 18377379353. The next prime is 18377379407. The reversal of 18377379400 is 497377381.

It can be written as a sum of positive squares in 3 ways, for example, as 10572363684 + 7805015716 = 102822^2 + 88346^2 .

It is a super-2 number, since 2×18377379400² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18377379407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45943249 + ... + 45943648.

Almost surely, 2^18377379400 is an apocalyptic number.

18377379400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18377379400 is an abundant number, since it is smaller than the sum of its proper divisors (24350028170).

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

18377379400 is a wasteful number, since it uses less digits than its factorization.

18377379400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91886913 (or 91886904 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 49.

The spelling of 18377379400 in words is "eighteen billion, three hundred seventy-seven million, three hundred seventy-nine thousand, four hundred".