18996158 has 8 divisors (see below), whose sum is σ = 28534152. Its totient is φ = 9484776.

The previous prime is 18996151. The next prime is 18996163. The reversal of 18996158 is 85169981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18996151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4760 + ... + 7787.

It is an arithmetic number, because the mean of its divisors is an integer number (3566769).

Almost surely, 2^18996158 is an apocalyptic number.

18996158 is a deficient number, since it is larger than the sum of its proper divisors (9537994).

18996158 is a wasteful number, since it uses less digits than its factorization.

18996158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13306.

The product of its digits is 155520, while the sum is 47.

The square root of 18996158 is about 4358.4582136347. The cubic root of 18996158 is about 266.8221776963.

The spelling of 18996158 in words is "eighteen million, nine hundred ninety-six thousand, one hundred fifty-eight".