18249950 has 24 divisors (see below), whose sum is σ = 34069248. Its totient is φ = 7273280.

The previous prime is 18249947. The next prime is 18249997. The reversal of 18249950 is 5994281.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 16.

It is a congruent number.

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, 18674 + ... + 19626.

It is an arithmetic number, because the mean of its divisors is an integer number (1419552).

Almost surely, 2^18249950 is an apocalyptic number.

18249950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18249950 is a deficient number, since it is larger than the sum of its proper divisors (15819298).

18249950 is a wasteful number, since it uses less digits than its factorization.

18249950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348 (or 1343 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 18249950 is about 4271.9960205974. The cubic root of 18249950 is about 263.2816309683.

The spelling of 18249950 in words is "eighteen million, two hundred forty-nine thousand, nine hundred fifty".