18437023089 has 63 divisors (see below), whose sum is σ = 28509974857. Its totient is φ = 11917402344.

The previous prime is 18437023079. The next prime is 18437023117. The reversal of 18437023089 is 98032073481.

The square root of 18437023089 is 135783.

It is a perfect power (a square), and thus also a powerful number.

18437023089 is a `hidden beast` number, since 184 + 370 + 23 + 0 + 89 = 666.

It is not a de Polignac number, because 18437023089 - 2⁵ = 18437023057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18437023079) by changing a digit.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 172308574 + ... + 172308680.

Almost surely, 2^18437023089 is an apocalyptic number.

18437023089 is the 135783-rd square number.

18437023089 is the 67892-nd centered octagonal number.

It is an amenable number.

18437023089 is a deficient number, since it is larger than the sum of its proper divisors (10072951768).

18437023089 is an frugal number, since it uses more digits than its factorization.

18437023089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 18437023089 in words is "eighteen billion, four hundred thirty-seven million, twenty-three thousand, eighty-nine".