2117454992 has 20 divisors (see below), whose sum is σ = 4343897196. Its totient is φ = 996449280.

The previous prime is 2117454991. The next prime is 2117455013. The reversal of 2117454992 is 2994547112.

It can be written as a sum of positive squares in 2 ways, for example, as 1794030736 + 323424256 = 42356^2 + 17984^2 .

It is not an unprimeable number, because it can be changed into a prime (2117454991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3892109 + ... + 3892652.

Almost surely, 2^2117454992 is an apocalyptic number.

It is an amenable number.

2117454992 is an abundant number, since it is smaller than the sum of its proper divisors (2226442204).

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

2117454992 is a wasteful number, since it uses less digits than its factorization.

2117454992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7784786 (or 7784780 counting only the distinct ones).

The product of its digits is 181440, while the sum is 44.

The square root of 2117454992 is about 46015.8124126914. The cubic root of 2117454992 is about 1284.1173956061.

The spelling of 2117454992 in words is "two billion, one hundred seventeen million, four hundred fifty-four thousand, nine hundred ninety-two".