18307382 has 4 divisors (see below), whose sum is σ = 27461076. Its totient is φ = 9153690.

The previous prime is 18307363. The next prime is 18307397. The reversal of 18307382 is 28370381.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4576844 + ... + 4576847.

It is an arithmetic number, because the mean of its divisors is an integer number (6865269).

Almost surely, 2^18307382 is an apocalyptic number.

18307382 is a deficient number, since it is larger than the sum of its proper divisors (9153694).

18307382 is an equidigital number, since it uses as much as digits as its factorization.

18307382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9153693.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 18307382 is about 4278.7126568630. The cubic root of 18307382 is about 263.5575213453.

The spelling of 18307382 in words is "eighteen million, three hundred seven thousand, three hundred eighty-two".