18370442 has 8 divisors (see below), whose sum is σ = 27840036. Its totient is φ = 9090432.

The previous prime is 18370433. The next prime is 18370453. The reversal of 18370442 is 24407381.

It can be written as a sum of positive squares in 2 ways, for example, as 18139081 + 231361 = 4259^2 + 481^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 47153 + ... + 47540.

Almost surely, 2^18370442 is an apocalyptic number.

18370442 is a deficient number, since it is larger than the sum of its proper divisors (9469594).

18370442 is an equidigital number, since it uses as much as digits as its factorization.

18370442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94792.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 18370442 is about 4286.0753609800. The cubic root of 18370442 is about 263.8597835913.

The spelling of 18370442 in words is "eighteen million, three hundred seventy thousand, four hundred forty-two".