18197774348 has 48 divisors (see below), whose sum is σ = 34600177920. Its totient is φ = 8324596800.

The previous prime is 18197774347. The next prime is 18197774359. The reversal of 18197774348 is 84347779181.

It is not an unprimeable number, because it can be changed into a prime (18197774341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9937793 + ... + 9939623.

It is an arithmetic number, because the mean of its divisors is an integer number (720837040).

Almost surely, 2^18197774348 is an apocalyptic number.

It is an amenable number.

18197774348 is a deficient number, since it is larger than the sum of its proper divisors (16402403572).

18197774348 is a wasteful number, since it uses less digits than its factorization.

18197774348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3438 (or 3436 counting only the distinct ones).

The product of its digits is 9483264, while the sum is 59.

The spelling of 18197774348 in words is "eighteen billion, one hundred ninety-seven million, seven hundred seventy-four thousand, three hundred forty-eight".