18465315273 has 12 divisors (see below), whose sum is σ = 27047786688. Its totient is φ = 12136826520.

The previous prime is 18465315259. The next prime is 18465315277. The reversal of 18465315273 is 37251356481.

It is a happy number.

18465315273 is a `hidden beast` number, since 1 + 8 + 4 + 65 + 315 + 273 = 666.

It is not a de Polignac number, because 18465315273 - 2⁴ = 18465315257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18465315277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14447965 + ... + 14449242.

It is an arithmetic number, because the mean of its divisors is an integer number (2253982224).

Almost surely, 2^18465315273 is an apocalyptic number.

It is an amenable number.

18465315273 is a deficient number, since it is larger than the sum of its proper divisors (8582471415).

18465315273 is a wasteful number, since it uses less digits than its factorization.

18465315273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28897284 (or 28897281 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The spelling of 18465315273 in words is "eighteen billion, four hundred sixty-five million, three hundred fifteen thousand, two hundred seventy-three".