18250918 has 16 divisors (see below), whose sum is σ = 32366880. Its totient is φ = 7551936.

The previous prime is 18250907. The next prime is 18250919. The reversal of 18250918 is 81905281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18250919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22071 + ... + 22882.

It is an arithmetic number, because the mean of its divisors is an integer number (2022930).

Almost surely, 2^18250918 is an apocalyptic number.

18250918 is a deficient number, since it is larger than the sum of its proper divisors (14115962).

18250918 is a wasteful number, since it uses less digits than its factorization.

18250918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44991.

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 18250918 is about 4272.1093150808. The cubic root of 18250918 is about 263.2862858142.

The spelling of 18250918 in words is "eighteen million, two hundred fifty thousand, nine hundred eighteen".