2117953166 has 12 divisors (see below), whose sum is σ = 3695612328. Its totient is φ = 907694172.

The previous prime is 2117953157. The next prime is 2117953207. The reversal of 2117953166 is 6613597112.

It is a super-2 number, since 2×2117953166² = 8971451226738847112, which contains 22 as substring.

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 5 ways as a sum of consecutive naturals, for example, 10805786 + ... + 10805981.

It is an arithmetic number, because the mean of its divisors is an integer number (307967694).

Almost surely, 2^2117953166 is an apocalyptic number.

2117953166 is a deficient number, since it is larger than the sum of its proper divisors (1577659162).

2117953166 is a wasteful number, since it uses less digits than its factorization.

2117953166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21611783 (or 21611776 counting only the distinct ones).

The product of its digits is 68040, while the sum is 41.

The square root of 2117953166 is about 46021.2251683938. The cubic root of 2117953166 is about 1284.2180925497.

The spelling of 2117953166 in words is "two billion, one hundred seventeen million, nine hundred fifty-three thousand, one hundred sixty-six".