2169117992 has 16 divisors (see below), whose sum is σ = 4306337460. Its totient is φ = 1020761344.

The previous prime is 2169117991. The next prime is 2169118031. The reversal of 2169117992 is 2997119612.

It can be written as a sum of positive squares in 2 ways, for example, as 1663497796 + 505620196 = 40786^2 + 22486^2 .

It is a super-2 number, since 2×2169117992² = 9410145726436224128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2169117991) 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 3 ways as a sum of consecutive naturals, for example, 7974563 + ... + 7974834.

Almost surely, 2^2169117992 is an apocalyptic number.

It is an amenable number.

2169117992 is a deficient number, since it is larger than the sum of its proper divisors (2137219468).

2169117992 is a wasteful number, since it uses less digits than its factorization.

2169117992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15949420 (or 15949416 counting only the distinct ones).

The product of its digits is 122472, while the sum is 47.

The square root of 2169117992 is about 46573.7908270306. The cubic root of 2169117992 is about 1294.4771604746.

The spelling of 2169117992 in words is "two billion, one hundred sixty-nine million, one hundred seventeen thousand, nine hundred ninety-two".