18522037 has 8 divisors (see below), whose sum is σ = 19055232. Its totient is φ = 17992800.

The previous prime is 18522029. The next prime is 18522059. The reversal of 18522037 is 73022581.

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 18522037 - 2³ = 18522029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18521996 and 18522014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18522437) 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, 10278 + ... + 11944.

It is an arithmetic number, because the mean of its divisors is an integer number (2381904).

Almost surely, 2^18522037 is an apocalyptic number.

It is an amenable number.

18522037 is a deficient number, since it is larger than the sum of its proper divisors (533195).

18522037 is a wasteful number, since it uses less digits than its factorization.

18522037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1979.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 18522037 is about 4303.7236203083. The cubic root of 18522037 is about 264.5835966572.

It can be divided in two parts, 185 and 22037, that added together give a palindrome (22222).

The spelling of 18522037 in words is "eighteen million, five hundred twenty-two thousand, thirty-seven".