2108356640 has 96 divisors (see below), whose sum is σ = 5597496576. Its totient is φ = 744606720.

The previous prime is 2108356631. The next prime is 2108356673. The reversal of 2108356640 is 466538012.

It is a self number, because there is not a number n which added to its sum of digits gives 2108356640.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25805 + ... + 69875.

It is an arithmetic number, because the mean of its divisors is an integer number (58307256).

Almost surely, 2^2108356640 is an apocalyptic number.

2108356640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2108356640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2798748288).

2108356640 is an abundant number, since it is smaller than the sum of its proper divisors (3489139936).

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

2108356640 is a wasteful number, since it uses less digits than its factorization.

2108356640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44122 (or 44114 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 2108356640 is about 45916.8448393397. The cubic root of 2108356640 is about 1282.2755420624.

The spelling of 2108356640 in words is "two billion, one hundred eight million, three hundred fifty-six thousand, six hundred forty".