18999350 has 24 divisors (see below), whose sum is σ = 36560160. Its totient is φ = 7337120.

The previous prime is 18999349. The next prime is 18999367. The reversal of 18999350 is 5399981.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5102 + ... + 8001.

It is an arithmetic number, because the mean of its divisors is an integer number (1523340).

Almost surely, 2^18999350 is an apocalyptic number.

18999350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18999350 is a deficient number, since it is larger than the sum of its proper divisors (17560810).

18999350 is a wasteful number, since it uses less digits than its factorization.

18999350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13144 (or 13139 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 44.

The square root of 18999350 is about 4358.8243827895. The cubic root of 18999350 is about 266.8371219233.

The spelling of 18999350 in words is "eighteen million, nine hundred ninety-nine thousand, three hundred fifty".