18023580607 has 4 divisors (see below), whose sum is σ = 18463180176. Its totient is φ = 17583981040.

The previous prime is 18023580599. The next prime is 18023580613. The reversal of 18023580607 is 70608532081.

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 18023580607 - 2³ = 18023580599 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18023580607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18023580647) 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, 219799723 + ... + 219799804.

It is an arithmetic number, because the mean of its divisors is an integer number (4615795044).

Almost surely, 2^18023580607 is an apocalyptic number.

18023580607 is a deficient number, since it is larger than the sum of its proper divisors (439599569).

18023580607 is an equidigital number, since it uses as much as digits as its factorization.

18023580607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439599568.

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 18023580607 in words is "eighteen billion, twenty-three million, five hundred eighty thousand, six hundred seven".