2117918722 has 8 divisors (see below), whose sum is σ = 3183195456. Its totient is φ = 1056853572.

The previous prime is 2117918717. The next prime is 2117918773. The reversal of 2117918722 is 2278197112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2117918722² = 8971159425996226568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1051638 + ... + 1053649.

It is an arithmetic number, because the mean of its divisors is an integer number (397899432).

Almost surely, 2^2117918722 is an apocalyptic number.

2117918722 is a deficient number, since it is larger than the sum of its proper divisors (1065276734).

2117918722 is a wasteful number, since it uses less digits than its factorization.

2117918722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2105792.

The product of its digits is 28224, while the sum is 40.

The square root of 2117918722 is about 46020.8509482387. The cubic root of 2117918722 is about 1284.2111308207.

The spelling of 2117918722 in words is "two billion, one hundred seventeen million, nine hundred eighteen thousand, seven hundred twenty-two".