18716495347 has 8 divisors (see below), whose sum is σ = 20419019712. Its totient is φ = 17014141800.

The previous prime is 18716495311. The next prime is 18716495363. The reversal of 18716495347 is 74359461781.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18716495347 - 2²⁷ = 18582277619 is a prime.

It is a super-3 number, since 3×18716495347³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18716490347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321472 + ... + 375202.

It is an arithmetic number, because the mean of its divisors is an integer number (2552377464).

Almost surely, 2^18716495347 is an apocalyptic number.

18716495347 is a deficient number, since it is larger than the sum of its proper divisors (1702524365).

18716495347 is a wasteful number, since it uses less digits than its factorization.

18716495347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85409.

The product of its digits is 5080320, while the sum is 55.

The spelling of 18716495347 in words is "eighteen billion, seven hundred sixteen million, four hundred ninety-five thousand, three hundred forty-seven".