18700058917 has 4 divisors (see below), whose sum is σ = 19303286656. Its totient is φ = 18096831180.

The previous prime is 18700058821. The next prime is 18700058947. The reversal of 18700058917 is 71985000781.

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 18700058917 - 2⁷ = 18700058789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18700058947) 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, 301613823 + ... + 301613884.

It is an arithmetic number, because the mean of its divisors is an integer number (4825821664).

Almost surely, 2^18700058917 is an apocalyptic number.

It is an amenable number.

18700058917 is a deficient number, since it is larger than the sum of its proper divisors (603227739).

18700058917 is an equidigital number, since it uses as much as digits as its factorization.

18700058917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603227738.

The product of its (nonzero) digits is 141120, while the sum is 46.

The spelling of 18700058917 in words is "eighteen billion, seven hundred million, fifty-eight thousand, nine hundred seventeen".