18071963079 has 4 divisors (see below), whose sum is σ = 24095950776. Its totient is φ = 12047975384.

The previous prime is 18071963071. The next prime is 18071963083. The reversal of 18071963079 is 97036917081.

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

It is a cyclic number.

It is not a de Polignac number, because 18071963079 - 2³ = 18071963071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18071963071) 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, 3011993844 + ... + 3011993849.

It is an arithmetic number, because the mean of its divisors is an integer number (6023987694).

Almost surely, 2^18071963079 is an apocalyptic number.

18071963079 is a deficient number, since it is larger than the sum of its proper divisors (6023987697).

18071963079 is an equidigital number, since it uses as much as digits as its factorization.

18071963079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6023987696.

The product of its (nonzero) digits is 571536, while the sum is 51.

The spelling of 18071963079 in words is "eighteen billion, seventy-one million, nine hundred sixty-three thousand, seventy-nine".