2117917368 has 80 divisors (see below), whose sum is σ = 6779591280. Its totient is φ = 605117952.

The previous prime is 2117917309. The next prime is 2117917411. The reversal of 2117917368 is 8637197112.

2117917368 is a `hidden beast` number, since 211 + 79 + 1 + 7 + 368 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 228921 + ... + 237992.

It is an arithmetic number, because the mean of its divisors is an integer number (84744891).

Almost surely, 2^2117917368 is an apocalyptic number.

2117917368 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2117917368 is an abundant number, since it is smaller than the sum of its proper divisors (4661673912).

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

2117917368 is a wasteful number, since it uses less digits than its factorization.

2117917368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466938 (or 466925 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 2117917368 is about 46020.8362375131. The cubic root of 2117917368 is about 1284.2108571523.

The spelling of 2117917368 in words is "two billion, one hundred seventeen million, nine hundred seventeen thousand, three hundred sixty-eight".