18126298133 has 4 divisors (see below), whose sum is σ = 18178236300. Its totient is φ = 18074359968.

The previous prime is 18126298111. The next prime is 18126298159. The reversal of 18126298133 is 33189262181.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11253390724 + 6872907409 = 106082^2 + 82903^2 .

It is a cyclic number.

It is not a de Polignac number, because 18126298133 - 2⁸ = 18126297877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18126298163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25968560 + ... + 25969257.

It is an arithmetic number, because the mean of its divisors is an integer number (4544559075).

Almost surely, 2^18126298133 is an apocalyptic number.

It is an amenable number.

18126298133 is a deficient number, since it is larger than the sum of its proper divisors (51938167).

18126298133 is an equidigital number, since it uses as much as digits as its factorization.

18126298133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51938166.

The product of its digits is 124416, while the sum is 44.

The spelling of 18126298133 in words is "eighteen billion, one hundred twenty-six million, two hundred ninety-eight thousand, one hundred thirty-three".