18379028919 has 4 divisors (see below), whose sum is σ = 24505371896. Its totient is φ = 12252685944.

The previous prime is 18379028917. The next prime is 18379028923. The reversal of 18379028919 is 91982097381.

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

It is not a de Polignac number, because 18379028919 - 2¹ = 18379028917 is a prime.

It is a super-2 number, since 2×18379028919² (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 (18379028917) 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, 3063171484 + ... + 3063171489.

It is an arithmetic number, because the mean of its divisors is an integer number (6126342974).

Almost surely, 2^18379028919 is an apocalyptic number.

18379028919 is a deficient number, since it is larger than the sum of its proper divisors (6126342977).

18379028919 is an equidigital number, since it uses as much as digits as its factorization.

18379028919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6126342976.

The product of its (nonzero) digits is 1959552, while the sum is 57.

The spelling of 18379028919 in words is "eighteen billion, three hundred seventy-nine million, twenty-eight thousand, nine hundred nineteen".