18994292 has 12 divisors (see below), whose sum is σ = 33289536. Its totient is φ = 9483000.

The previous prime is 18994277. The next prime is 18994303. The reversal of 18994292 is 29249981.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158 + ... + 6165.

It is an arithmetic number, because the mean of its divisors is an integer number (2774128).

Almost surely, 2^18994292 is an apocalyptic number.

It is an amenable number.

18994292 is a deficient number, since it is larger than the sum of its proper divisors (14295244).

18994292 is a wasteful number, since it uses less digits than its factorization.

18994292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7078 (or 7076 counting only the distinct ones).

The product of its digits is 93312, while the sum is 44.

The square root of 18994292 is about 4358.2441418535. The cubic root of 18994292 is about 266.8134407281.

The spelling of 18994292 in words is "eighteen million, nine hundred ninety-four thousand, two hundred ninety-two".