18816950 has 48 divisors (see below), whose sum is σ = 36653904. Its totient is φ = 7180800.

The previous prime is 18816923. The next prime is 18816983. The reversal of 18816950 is 5961881.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 137282 + ... + 137418.

It is an arithmetic number, because the mean of its divisors is an integer number (763623).

Almost surely, 2^18816950 is an apocalyptic number.

18816950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18816950 is a deficient number, since it is larger than the sum of its proper divisors (17836954).

18816950 is a wasteful number, since it uses less digits than its factorization.

18816950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 38.

The square root of 18816950 is about 4337.8508503636. The cubic root of 18816950 is about 265.9804666531.

The spelling of 18816950 in words is "eighteen million, eight hundred sixteen thousand, nine hundred fifty".