18412137 has 8 divisors (see below), whose sum is σ = 27277280. Its totient is φ = 12274740.

The previous prime is 18412111. The next prime is 18412151. The reversal of 18412137 is 73121481.

It is not a de Polignac number, because 18412137 - 2²³ = 10023529 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 681931 = 18412137 / (1 + 8 + 4 + 1 + 2 + 1 + 3 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18412137.

It is not an unprimeable number, because it can be changed into a prime (18412237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340939 + ... + 340992.

It is an arithmetic number, because the mean of its divisors is an integer number (3409660).

Almost surely, 2^18412137 is an apocalyptic number.

It is an amenable number.

18412137 is a deficient number, since it is larger than the sum of its proper divisors (8865143).

18412137 is an equidigital number, since it uses as much as digits as its factorization.

18412137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681940 (or 681934 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 18412137 is about 4290.9366110443. The cubic root of 18412137 is about 264.0592583919.

It can be divided in two parts, 184 and 12137, that added together give a palindrome (12321).

The spelling of 18412137 in words is "eighteen million, four hundred twelve thousand, one hundred thirty-seven".