18868650 has 24 divisors (see below), whose sum is σ = 46794624. Its totient is φ = 5031600.

The previous prime is 18868649. The next prime is 18868669. The reversal of 18868650 is 5686881.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62746 + ... + 63045.

It is an arithmetic number, because the mean of its divisors is an integer number (1949776).

Almost surely, 2^18868650 is an apocalyptic number.

18868650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18868650 is an abundant number, since it is smaller than the sum of its proper divisors (27925974).

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

18868650 is a wasteful number, since it uses less digits than its factorization.

18868650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125806 (or 125801 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 42.

The square root of 18868650 is about 4343.8059348917. The cubic root of 18868650 is about 266.2238397009.

The spelling of 18868650 in words is "eighteen million, eight hundred sixty-eight thousand, six hundred fifty".