18481792 has 32 divisors (see below), whose sum is σ = 42081120. Its totient is φ = 7920384.

The previous prime is 18481783. The next prime is 18481807. The reversal of 18481792 is 29718481.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

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, 9418 + ... + 11209.

It is an arithmetic number, because the mean of its divisors is an integer number (1315035).

Almost surely, 2^18481792 is an apocalyptic number.

It is an amenable number.

18481792 is an abundant number, since it is smaller than the sum of its proper divisors (23599328).

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

18481792 is an equidigital number, since it uses as much as digits as its factorization.

18481792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20648 (or 20636 counting only the distinct ones).

The product of its digits is 32256, while the sum is 40.

The square root of 18481792 is about 4299.0454754515. The cubic root of 18481792 is about 264.3918271029.

The spelling of 18481792 in words is "eighteen million, four hundred eighty-one thousand, seven hundred ninety-two".