18197653068 has 144 divisors (see below), whose sum is σ = 53665597440. Its totient is φ = 5092192512.

The previous prime is 18197653051. The next prime is 18197653073. The reversal of 18197653068 is 86035679181.

18197653068 is a `hidden beast` number, since 18 + 1 + 97 + 6 + 530 + 6 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2396005 + ... + 2403587.

It is an arithmetic number, because the mean of its divisors is an integer number (372677760).

Almost surely, 2^18197653068 is an apocalyptic number.

18197653068 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18197653068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26832798720).

18197653068 is an abundant number, since it is smaller than the sum of its proper divisors (35467944372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18197653068 is a wasteful number, since it uses less digits than its factorization.

18197653068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7796 (or 7791 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 18197653068 in words is "eighteen billion, one hundred ninety-seven million, six hundred fifty-three thousand, sixty-eight".