18973597347 has 12 divisors (see below), whose sum is σ = 28074754344. Its totient is φ = 12340550880.

The previous prime is 18973597301. The next prime is 18973597403. The reversal of 18973597347 is 74379537981.

18973597347 is a `hidden beast` number, since 1 + 8 + 9 + 7 + 3 + 597 + 34 + 7 = 666.

It is not a de Polignac number, because 18973597347 - 2⁷ = 18973597219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18973547347) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25709113 + ... + 25709850.

It is an arithmetic number, because the mean of its divisors is an integer number (2339562862).

Almost surely, 2^18973597347 is an apocalyptic number.

18973597347 is a deficient number, since it is larger than the sum of its proper divisors (9101156997).

18973597347 is a wasteful number, since it uses less digits than its factorization.

18973597347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51419010 (or 51419007 counting only the distinct ones).

The product of its digits is 40007520, while the sum is 63.

The spelling of 18973597347 in words is "eighteen billion, nine hundred seventy-three million, five hundred ninety-seven thousand, three hundred forty-seven".