18990162 has 24 divisors (see below), whose sum is σ = 42022656. Its totient is φ = 6195096.

The previous prime is 18990143. The next prime is 18990163. The reversal of 18990162 is 26109981.

It is not an unprimeable number, because it can be changed into a prime (18990163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10378 + ... + 12069.

It is an arithmetic number, because the mean of its divisors is an integer number (1750944).

Almost surely, 2^18990162 is an apocalyptic number.

18990162 is an abundant number, since it is smaller than the sum of its proper divisors (23032494).

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

18990162 is a wasteful number, since it uses less digits than its factorization.

18990162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22502 (or 22499 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 18990162 is about 4357.7703014271. The cubic root of 18990162 is about 266.7941012447.

The spelling of 18990162 in words is "eighteen million, nine hundred ninety thousand, one hundred sixty-two".