18360940 has 24 divisors (see below), whose sum is σ = 41524560. Its totient is φ = 6779328.

The previous prime is 18360931. The next prime is 18360971. The reversal of 18360940 is 4906381.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35050 + ... + 35569.

It is an arithmetic number, because the mean of its divisors is an integer number (1730190).

Almost surely, 2^18360940 is an apocalyptic number.

18360940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18360940 is an abundant number, since it is smaller than the sum of its proper divisors (23163620).

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

18360940 is a wasteful number, since it uses less digits than its factorization.

18360940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70641 (or 70639 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 18360940 is about 4284.9667443284. The cubic root of 18360940 is about 263.8142824530.

The spelling of 18360940 in words is "eighteen million, three hundred sixty thousand, nine hundred forty".