2117916958 has 16 divisors (see below), whose sum is σ = 3316373280. Its totient is φ = 1012497376.

The previous prime is 2117916907. The next prime is 2117916971. The reversal of 2117916958 is 8596197112.

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 7 ways as a sum of consecutive naturals, for example, 122388 + ... + 138616.

It is an arithmetic number, because the mean of its divisors is an integer number (207273330).

Almost surely, 2^2117916958 is an apocalyptic number.

2117916958 is a deficient number, since it is larger than the sum of its proper divisors (1198456322).

2117916958 is a wasteful number, since it uses less digits than its factorization.

2117916958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19091.

The product of its digits is 272160, while the sum is 49.

The square root of 2117916958 is about 46020.8317830089. The cubic root of 2117916958 is about 1284.2107742837.

The spelling of 2117916958 in words is "two billion, one hundred seventeen million, nine hundred sixteen thousand, nine hundred fifty-eight".