18019800351 has 56 divisors (see below), whose sum is σ = 30911404064. Its totient is φ = 10285548480.

The previous prime is 18019800341. The next prime is 18019800377. The reversal of 18019800351 is 15300891081.

It is not a de Polignac number, because 18019800351 - 2²² = 18015606047 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 (18019800341) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 7045965 + ... + 7048521.

Almost surely, 2^18019800351 is an apocalyptic number.

18019800351 is a deficient number, since it is larger than the sum of its proper divisors (12891603713).

18019800351 is an equidigital number, since it uses as much as digits as its factorization.

18019800351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3963 (or 3948 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 36.

The spelling of 18019800351 in words is "eighteen billion, nineteen million, eight hundred thousand, three hundred fifty-one".