18137073 has 8 divisors (see below), whose sum is σ = 24290208. Its totient is φ = 12037664.

The previous prime is 18137051. The next prime is 18137083. The reversal of 18137073 is 37073181.

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

It is a cyclic number.

It is not a de Polignac number, because 18137073 - 2⁹ = 18136561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18137073.

It is not an unprimeable number, because it can be changed into a prime (18137033) 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, 12636 + ... + 13997.

It is an arithmetic number, because the mean of its divisors is an integer number (3036276).

Almost surely, 2^18137073 is an apocalyptic number.

It is an amenable number.

18137073 is a deficient number, since it is larger than the sum of its proper divisors (6153135).

18137073 is a wasteful number, since it uses less digits than its factorization.

18137073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26863.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 18137073 is about 4258.7642573873. The cubic root of 18137073 is about 262.7377039592.

The spelling of 18137073 in words is "eighteen million, one hundred thirty-seven thousand, seventy-three".