18073237 has 16 divisors (see below), whose sum is σ = 23416960. Its totient is φ = 13545792.

The previous prime is 18073213. The next prime is 18073259. The reversal of 18073237 is 73237081.

It is not a de Polignac number, because 18073237 - 2¹⁵ = 18040469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18073199 and 18073208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18073207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3498 + ... + 6955.

It is an arithmetic number, because the mean of its divisors is an integer number (1463560).

Almost surely, 2^18073237 is an apocalyptic number.

It is an amenable number.

18073237 is a deficient number, since it is larger than the sum of its proper divisors (5343723).

18073237 is a wasteful number, since it uses less digits than its factorization.

18073237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10492.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 18073237 is about 4251.2629888070. The cubic root of 18073237 is about 262.4290940763.

The spelling of 18073237 in words is "eighteen million, seventy-three thousand, two hundred thirty-seven".