18348875285 has 16 divisors (see below), whose sum is σ = 25107240816. Its totient is φ = 12752882688.

The previous prime is 18348875243. The next prime is 18348875329. The reversal of 18348875285 is 58257884381.

It can be written as a sum of positive squares in 8 ways, for example, as 1521078001 + 16827797284 = 39001^2 + 129722^2 .

It is not a de Polignac number, because 18348875285 - 2⁶ = 18348875221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 8301554 + ... + 8303763.

It is an arithmetic number, because the mean of its divisors is an integer number (1569202551).

Almost surely, 2^18348875285 is an apocalyptic number.

It is an amenable number.

18348875285 is a deficient number, since it is larger than the sum of its proper divisors (6758365531).

18348875285 is a wasteful number, since it uses less digits than its factorization.

18348875285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16605352.

The product of its digits is 17203200, while the sum is 59.

The spelling of 18348875285 in words is "eighteen billion, three hundred forty-eight million, eight hundred seventy-five thousand, two hundred eighty-five".