18618295677 has 4 divisors (see below), whose sum is σ = 24824394240. Its totient is φ = 12412197116.

The previous prime is 18618295651. The next prime is 18618295687. The reversal of 18618295677 is 77659281681.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18618295677 - 2⁶ = 18618295613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18618295677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18618295627) 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, 3103049277 + ... + 3103049282.

It is an arithmetic number, because the mean of its divisors is an integer number (6206098560).

Almost surely, 2^18618295677 is an apocalyptic number.

It is an amenable number.

18618295677 is a deficient number, since it is larger than the sum of its proper divisors (6206098563).

18618295677 is an equidigital number, since it uses as much as digits as its factorization.

18618295677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6206098562.

The product of its digits is 10160640, while the sum is 60.

The spelling of 18618295677 in words is "eighteen billion, six hundred eighteen million, two hundred ninety-five thousand, six hundred seventy-seven".