18191819119 has 24 divisors (see below), whose sum is σ = 20052920720. Its totient is φ = 16486281216.

The previous prime is 18191819101. The next prime is 18191819131. The reversal of 18191819119 is 91191819181.

It is not a de Polignac number, because 18191819119 - 2⁷ = 18191818991 is a prime.

It is a super-2 number, since 2×18191819119² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18191819189) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1028452 + ... + 1045990.

Almost surely, 2^18191819119 is an apocalyptic number.

18191819119 is a deficient number, since it is larger than the sum of its proper divisors (1861101601).

18191819119 is a wasteful number, since it uses less digits than its factorization.

18191819119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17707 (or 17690 counting only the distinct ones).

The product of its digits is 46656, while the sum is 49.

The spelling of 18191819119 in words is "eighteen billion, one hundred ninety-one million, eight hundred nineteen thousand, one hundred nineteen".