18021162 has 8 divisors (see below), whose sum is σ = 36042336. Its totient is φ = 6007052.

The previous prime is 18021131. The next prime is 18021187. The reversal of 18021162 is 26112081.

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

18021162 is an admirable 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 3 ways as a sum of consecutive naturals, for example, 1501758 + ... + 1501769.

It is an arithmetic number, because the mean of its divisors is an integer number (4505292).

Almost surely, 2^18021162 is an apocalyptic number.

18021162 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18021162 is a wasteful number, since it uses less digits than its factorization.

18021162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003532.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 18021162 is about 4245.1339201490. The cubic root of 18021162 is about 262.1768031419.

The spelling of 18021162 in words is "eighteen million, twenty-one thousand, one hundred sixty-two".