18423682 has 16 divisors (see below), whose sum is σ = 29340792. Its totient is φ = 8646400.

The previous prime is 18423679. The next prime is 18423751. The reversal of 18423682 is 28632481.

It can be written as a sum of positive squares in 4 ways, for example, as 16736281 + 1687401 = 4091^2 + 1299^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

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, 23448 + ... + 24220.

Almost surely, 2^18423682 is an apocalyptic number.

18423682 is a deficient number, since it is larger than the sum of its proper divisors (10917110).

18423682 is a wasteful number, since it uses less digits than its factorization.

18423682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493.

The product of its digits is 18432, while the sum is 34.

The square root of 18423682 is about 4292.2816776162. The cubic root of 18423682 is about 264.1144380663.

The spelling of 18423682 in words is "eighteen million, four hundred twenty-three thousand, six hundred eighty-two".