18868316 has 6 divisors (see below), whose sum is σ = 33019560. Its totient is φ = 9434156.

The previous prime is 18868309. The next prime is 18868361. The reversal of 18868316 is 61386881.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2358536 + ... + 2358543.

It is an arithmetic number, because the mean of its divisors is an integer number (5503260).

Almost surely, 2^18868316 is an apocalyptic number.

It is an amenable number.

18868316 is a deficient number, since it is larger than the sum of its proper divisors (14151244).

18868316 is a wasteful number, since it uses less digits than its factorization.

18868316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4717083 (or 4717081 counting only the distinct ones).

The product of its digits is 55296, while the sum is 41.

The square root of 18868316 is about 4343.7674891734. The cubic root of 18868316 is about 266.2222688539. Note that the first 4 decimals are identical.

The spelling of 18868316 in words is "eighteen million, eight hundred sixty-eight thousand, three hundred sixteen".