18089703 has 8 divisors (see below), whose sum is σ = 26799600. Its totient is φ = 12059784.

The previous prime is 18089693. The next prime is 18089723. The reversal of 18089703 is 30798081.

It is not a de Polignac number, because 18089703 - 2⁸ = 18089447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18089723) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 334968 + ... + 335021.

It is an arithmetic number, because the mean of its divisors is an integer number (3349950).

Almost surely, 2^18089703 is an apocalyptic number.

18089703 is a deficient number, since it is larger than the sum of its proper divisors (8709897).

18089703 is an equidigital number, since it uses as much as digits as its factorization.

18089703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669998 (or 669992 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 18089703 is about 4253.1991488761. The cubic root of 18089703 is about 262.5087670541.

It can be divided in two parts, 1808 and 9703, that added together give a palindrome (11511).

The spelling of 18089703 in words is "eighteen million, eighty-nine thousand, seven hundred three".