18037942 has 32 divisors (see below), whose sum is σ = 30844800. Its totient is φ = 7851648.

The previous prime is 18037933. The next prime is 18037951. The reversal of 18037942 is 24973081.

It is an interprime number because it is at equal distance from previous prime (18037933) and next prime (18037951).

It is a junction number, because it is equal to n+sod(n) for n = 18037898 and 18037907.

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 in 15 ways as a sum of consecutive naturals, for example, 35184 + ... + 35692.

It is an arithmetic number, because the mean of its divisors is an integer number (963900).

Almost surely, 2^18037942 is an apocalyptic number.

18037942 is a deficient number, since it is larger than the sum of its proper divisors (12806858).

18037942 is a wasteful number, since it uses less digits than its factorization.

18037942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 18037942 is about 4247.1098408212. The cubic root of 18037942 is about 262.2581512447.

The spelling of 18037942 in words is "eighteen million, thirty-seven thousand, nine hundred forty-two".