18373942 has 4 divisors (see below), whose sum is σ = 27560916. Its totient is φ = 9186970.

The previous prime is 18373939. The next prime is 18373963. The reversal of 18373942 is 24937381.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 4593484 + ... + 4593487.

It is an arithmetic number, because the mean of its divisors is an integer number (6890229).

Almost surely, 2^18373942 is an apocalyptic number.

18373942 is a deficient number, since it is larger than the sum of its proper divisors (9186974).

18373942 is an equidigital number, since it uses as much as digits as its factorization.

18373942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9186973.

The product of its digits is 36288, while the sum is 37.

The square root of 18373942 is about 4286.4836404680. The cubic root of 18373942 is about 263.8765396860.

The spelling of 18373942 in words is "eighteen million, three hundred seventy-three thousand, nine hundred forty-two".