18330793 has 16 divisors (see below), whose sum is σ = 20837376. Its totient is φ = 15998400.

The previous prime is 18330787. The next prime is 18330803. The reversal of 18330793 is 39703381.

It is not a de Polignac number, because 18330793 - 2¹⁷ = 18199721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18330733) 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 15 ways as a sum of consecutive naturals, for example, 29896 + ... + 30502.

It is an arithmetic number, because the mean of its divisors is an integer number (1302336).

Almost surely, 2^18330793 is an apocalyptic number.

18330793 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18330793 is a deficient number, since it is larger than the sum of its proper divisors (2506583).

18330793 is a wasteful number, since it uses less digits than its factorization.

18330793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 18330793 is about 4281.4475355889. The cubic root of 18330793 is about 263.6698169742.

It can be divided in two parts, 183 and 30793, that added together give a square (30976 = 176²).

The spelling of 18330793 in words is "eighteen million, three hundred thirty thousand, seven hundred ninety-three".