18213150 has 24 divisors (see below), whose sum is σ = 45168984. Its totient is φ = 4856800.

The previous prime is 18213149. The next prime is 18213161. The reversal of 18213150 is 5131281.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

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 in 11 ways as a sum of consecutive naturals, for example, 60561 + ... + 60860.

It is an arithmetic number, because the mean of its divisors is an integer number (1882041).

Almost surely, 2^18213150 is an apocalyptic number.

18213150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18213150 is an abundant number, since it is smaller than the sum of its proper divisors (26955834).

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

18213150 is a wasteful number, since it uses less digits than its factorization.

18213150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121436 (or 121431 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 18213150 is about 4267.6867270220. The cubic root of 18213150 is about 263.1045476775.

The spelling of 18213150 in words is "eighteen million, two hundred thirteen thousand, one hundred fifty".