18347464717 has 4 divisors (see below), whose sum is σ = 18402895456. Its totient is φ = 18292033980.

The previous prime is 18347464673. The next prime is 18347464753. The reversal of 18347464717 is 71746474381.

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 a de Polignac number, because none of the positive numbers 2^k-18347464717 is a prime.

It is a super-4 number, since 4×18347464717⁴ (a number of 42 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18347464117) 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, 27714873 + ... + 27715534.

It is an arithmetic number, because the mean of its divisors is an integer number (4600723864).

Almost surely, 2^18347464717 is an apocalyptic number.

It is an amenable number.

18347464717 is a deficient number, since it is larger than the sum of its proper divisors (55430739).

18347464717 is an equidigital number, since it uses as much as digits as its factorization.

18347464717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55430738.

The product of its digits is 3161088, while the sum is 52.

The spelling of 18347464717 in words is "eighteen billion, three hundred forty-seven million, four hundred sixty-four thousand, seven hundred seventeen".