18373982 has 16 divisors (see below), whose sum is σ = 30271104. Its totient is φ = 8295000.

The previous prime is 18373981. The next prime is 18374011. The reversal of 18373982 is 28937381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18373981) 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, 557 + ... + 6087.

It is an arithmetic number, because the mean of its divisors is an integer number (1891944).

Almost surely, 2^18373982 is an apocalyptic number.

18373982 is a deficient number, since it is larger than the sum of its proper divisors (11897122).

18373982 is a wasteful number, since it uses less digits than its factorization.

18373982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5695.

The product of its digits is 72576, while the sum is 41.

The square root of 18373982 is about 4286.4883062946. The cubic root of 18373982 is about 263.8767311719.

The spelling of 18373982 in words is "eighteen million, three hundred seventy-three thousand, nine hundred eighty-two".