18775719059 has 4 divisors (see below), whose sum is σ = 18818102616. Its totient is φ = 18733335504.

The previous prime is 18775718959. The next prime is 18775719073. The reversal of 18775719059 is 95091757781.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95091757781 = 5233 ⋅18171557.

It is a cyclic number.

It is not a de Polignac number, because 18775719059 - 2²⁸ = 18507283603 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18775718989 and 18775719007.

It is not an unprimeable number, because it can be changed into a prime (18775719359) 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, 21191114 + ... + 21191999.

It is an arithmetic number, because the mean of its divisors is an integer number (4704525654).

Almost surely, 2^18775719059 is an apocalyptic number.

18775719059 is a deficient number, since it is larger than the sum of its proper divisors (42383557).

18775719059 is an equidigital number, since it uses as much as digits as its factorization.

18775719059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42383556.

The product of its (nonzero) digits is 5556600, while the sum is 59.

The spelling of 18775719059 in words is "eighteen billion, seven hundred seventy-five million, seven hundred nineteen thousand, fifty-nine".