18902 has 8 divisors (see below), whose sum is σ = 30576. Its totient is φ = 8712.

The previous prime is 18899. The next prime is 18911. The reversal of 18902 is 20981.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338 + ... + 389.

It is an arithmetic number, because the mean of its divisors is an integer number (3822).

2¹⁸⁹⁰² is an apocalyptic number.

18902 is a deficient number, since it is larger than the sum of its proper divisors (11674).

18902 is a wasteful number, since it uses less digits than its factorization.

18902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 18902 is about 137.4845445859. The cubic root of 18902 is about 26.6380596001.

The spelling of 18902 in words is "eighteen thousand, nine hundred two".