18479494 has 16 divisors (see below), whose sum is σ = 30461760. Its totient is φ = 8337960.

The previous prime is 18479477. The next prime is 18479509. The reversal of 18479494 is 49497481.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 37 + ... + 6079.

It is an arithmetic number, because the mean of its divisors is an integer number (1903860).

Almost surely, 2^18479494 is an apocalyptic number.

18479494 is a deficient number, since it is larger than the sum of its proper divisors (11982266).

18479494 is a wasteful number, since it uses less digits than its factorization.

18479494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6195.

The product of its digits is 290304, while the sum is 46.

The square root of 18479494 is about 4298.7781985118. The cubic root of 18479494 is about 264.3808686128.

The spelling of 18479494 in words is "eighteen million, four hundred seventy-nine thousand, four hundred ninety-four".