18842165 has 16 divisors (see below), whose sum is σ = 23405760. Its totient is φ = 14551680.

The previous prime is 18842149. The next prime is 18842177. The reversal of 18842165 is 56124881.

It is not a de Polignac number, because 18842165 - 2⁴ = 18842149 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21506 + ... + 22364.

It is an arithmetic number, because the mean of its divisors is an integer number (1462860).

Almost surely, 2^18842165 is an apocalyptic number.

It is an amenable number.

18842165 is a deficient number, since it is larger than the sum of its proper divisors (4563595).

18842165 is a wasteful number, since it uses less digits than its factorization.

18842165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012.

The product of its digits is 15360, while the sum is 35.

The square root of 18842165 is about 4340.7562705132. The cubic root of 18842165 is about 266.0992195860.

The spelling of 18842165 in words is "eighteen million, eight hundred forty-two thousand, one hundred sixty-five".