18481794 has 32 divisors (see below), whose sum is σ = 39137280. Its totient is φ = 5802192.

The previous prime is 18481783. The next prime is 18481807. The reversal of 18481794 is 49718481.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25059 + ... + 25785.

It is an arithmetic number, because the mean of its divisors is an integer number (1223040).

Almost surely, 2^18481794 is an apocalyptic number.

18481794 is an abundant number, since it is smaller than the sum of its proper divisors (20655486).

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

18481794 is a wasteful number, since it uses less digits than its factorization.

18481794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974.

The product of its digits is 64512, while the sum is 42.

The square root of 18481794 is about 4299.0457080613. The cubic root of 18481794 is about 264.3918366399.

The spelling of 18481794 in words is "eighteen million, four hundred eighty-one thousand, seven hundred ninety-four".