2108645400 has 48 divisors (see below), whose sum is σ = 6536802600. Its totient is φ = 562305280.

The previous prime is 2108645353. The next prime is 2108645417. The reversal of 2108645400 is 45468012.

2108645400 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1756605 + ... + 1757804.

Almost surely, 2^2108645400 is an apocalyptic number.

2108645400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2108645400 is an abundant number, since it is smaller than the sum of its proper divisors (4428157200).

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

2108645400 is a wasteful number, since it uses less digits than its factorization.

2108645400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3514428 (or 3514419 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 2108645400 is about 45919.9891114970. The cubic root of 2108645400 is about 1282.3340794363.

The spelling of 2108645400 in words is "two billion, one hundred eight million, six hundred forty-five thousand, four hundred".