18994102 has 4 divisors (see below), whose sum is σ = 28491156. Its totient is φ = 9497050.

The previous prime is 18994069. The next prime is 18994141. The reversal of 18994102 is 20149981.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 4748524 + ... + 4748527.

It is an arithmetic number, because the mean of its divisors is an integer number (7122789).

Almost surely, 2^18994102 is an apocalyptic number.

18994102 is a deficient number, since it is larger than the sum of its proper divisors (9497054).

18994102 is an equidigital number, since it uses as much as digits as its factorization.

18994102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9497053.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 18994102 is about 4358.2223440297. Note that the first 3 decimals coincide. The cubic root of 18994102 is about 266.8125510797.

The spelling of 18994102 in words is "eighteen million, nine hundred ninety-four thousand, one hundred two".