18051790 has 16 divisors (see below), whose sum is σ = 34404912. Its totient is φ = 6795904.

The previous prime is 18051769. The next prime is 18051793. The reversal of 18051790 is 9715081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18051793) 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, 52924 + ... + 53263.

It is an arithmetic number, because the mean of its divisors is an integer number (2150307).

Almost surely, 2^18051790 is an apocalyptic number.

18051790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18051790 is a deficient number, since it is larger than the sum of its proper divisors (16353122).

18051790 is a wasteful number, since it uses less digits than its factorization.

18051790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106211.

The product of its (nonzero) digits is 2520, while the sum is 31.

The square root of 18051790 is about 4248.7398131681. The cubic root of 18051790 is about 262.3252472562.

The spelling of 18051790 in words is "eighteen million, fifty-one thousand, seven hundred ninety".