18731128351 has 6 divisors (see below), whose sum is σ = 20282819640. Its totient is φ = 17290272168.

The previous prime is 18731128331. The next prime is 18731128363. The reversal of 18731128351 is 15382113781.

It is not a de Polignac number, because 18731128351 - 2⁹ = 18731127839 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 (18731128331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55417371 + ... + 55417708.

It is an arithmetic number, because the mean of its divisors is an integer number (3380469940).

Almost surely, 2^18731128351 is an apocalyptic number.

18731128351 is a deficient number, since it is larger than the sum of its proper divisors (1551691289).

18731128351 is a wasteful number, since it uses less digits than its factorization.

18731128351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110835105 (or 110835092 counting only the distinct ones).

The product of its digits is 40320, while the sum is 40.

The spelling of 18731128351 in words is "eighteen billion, seven hundred thirty-one million, one hundred twenty-eight thousand, three hundred fifty-one".