2109709080 has 96 divisors (see below), whose sum is σ = 7217449200. Its totient is φ = 532977408.

The previous prime is 2109709039. The next prime is 2109709087. The reversal of 2109709080 is 809079012.

It is a happy number.

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 (2109709087) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 147379 + ... + 161058.

Almost surely, 2^2109709080 is an apocalyptic number.

2109709080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2109709080 is an abundant number, since it is smaller than the sum of its proper divisors (5107740120).

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

2109709080 is a wasteful number, since it uses less digits than its factorization.

2109709080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308473 (or 308466 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 2109709080 is about 45931.5695355602. The cubic root of 2109709080 is about 1282.5496623611.

The spelling of 2109709080 in words is "two billion, one hundred nine million, seven hundred nine thousand, eighty".