2117053908 has 42 divisors (see below), whose sum is σ = 5554733114. Its totient is φ = 705683664.

The previous prime is 2117053903. The next prime is 2117053921. The reversal of 2117053908 is 8093507112.

2117053908 is a `hidden beast` number, since 2 + 117 + 0 + 539 + 0 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1060283844 + 1056770064 = 32562^2 + 32508^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2117053903) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 360091 + ... + 365922.

Almost surely, 2^2117053908 is an apocalyptic number.

It is an amenable number.

2117053908 is an abundant number, since it is smaller than the sum of its proper divisors (3437679206).

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

2117053908 is an equidigital number, since it uses as much as digits as its factorization.

2117053908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726035 (or 726018 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 2117053908 is about 46011.4540956923. The cubic root of 2117053908 is about 1284.0363121882.

It can be divided in two parts, 21170 and 53908, that added together give a triangular number (75078 = T₃₈₇).

The spelling of 2117053908 in words is "two billion, one hundred seventeen million, fifty-three thousand, nine hundred eight".