18357234273 has 12 divisors (see below), whose sum is σ = 30304005888. Its totient is φ = 10489848120.

The previous prime is 18357234227. The next prime is 18357234277. The reversal of 18357234273 is 37243275381.

It is a happy number.

18357234273 is a `hidden beast` number, since 1 + 8 + 3 + 572 + 3 + 4 + 2 + 73 = 666.

It is not a de Polignac number, because 18357234273 - 2²⁶ = 18290125409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18357234277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145692273 + ... + 145692398.

It is an arithmetic number, because the mean of its divisors is an integer number (2525333824).

Almost surely, 2^18357234273 is an apocalyptic number.

It is an amenable number.

18357234273 is a deficient number, since it is larger than the sum of its proper divisors (11946771615).

18357234273 is a wasteful number, since it uses less digits than its factorization.

18357234273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291384684 (or 291384681 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

The spelling of 18357234273 in words is "eighteen billion, three hundred fifty-seven million, two hundred thirty-four thousand, two hundred seventy-three".