18902059 has 4 divisors (see below), whose sum is σ = 20620440. Its totient is φ = 17183680.

The previous prime is 18902053. The next prime is 18902071. The reversal of 18902059 is 95020981.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18902059 - 2¹⁹ = 18377771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18902053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 859174 + ... + 859195.

It is an arithmetic number, because the mean of its divisors is an integer number (5155110).

Almost surely, 2^18902059 is an apocalyptic number.

18902059 is a deficient number, since it is larger than the sum of its proper divisors (1718381).

18902059 is a wasteful number, since it uses less digits than its factorization.

18902059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718380.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 18902059 is about 4347.6498249054. The cubic root of 18902059 is about 266.3808731575.

The spelling of 18902059 in words is "eighteen million, nine hundred two thousand, fifty-nine".