18982156 has 6 divisors (see below), whose sum is σ = 33218780. Its totient is φ = 9491076.

The previous prime is 18982151. The next prime is 18982157. The reversal of 18982156 is 65128981.

It is not an unprimeable number, because it can be changed into a prime (18982151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2372766 + ... + 2372773.

Almost surely, 2^18982156 is an apocalyptic number.

It is an amenable number.

18982156 is a deficient number, since it is larger than the sum of its proper divisors (14236624).

18982156 is a wasteful number, since it uses less digits than its factorization.

18982156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4745543 (or 4745541 counting only the distinct ones).

The product of its digits is 34560, while the sum is 40.

The square root of 18982156 is about 4356.8516155591. The cubic root of 18982156 is about 266.7566036919.

The spelling of 18982156 in words is "eighteen million, nine hundred eighty-two thousand, one hundred fifty-six".