18739794 has 16 divisors (see below), whose sum is σ = 37544832. Its totient is φ = 6235728.

The previous prime is 18739789. The next prime is 18739801. The reversal of 18739794 is 49793781.

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, 1527 + ... + 6309.

It is an arithmetic number, because the mean of its divisors is an integer number (2346552).

Almost surely, 2^18739794 is an apocalyptic number.

18739794 is an abundant number, since it is smaller than the sum of its proper divisors (18805038).

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

18739794 is a wasteful number, since it uses less digits than its factorization.

18739794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5441.

The product of its digits is 381024, while the sum is 48.

The square root of 18739794 is about 4328.9483711405. The cubic root of 18739794 is about 265.6164313545.

Subtracting from 18739794 its product of digits (381024), we obtain a triangular number (18358770 = T₆₀₅₉).

The spelling of 18739794 in words is "eighteen million, seven hundred thirty-nine thousand, seven hundred ninety-four".