2108646408 has 64 divisors (see below), whose sum is σ = 6089152320. Its totient is φ = 601395200.

The previous prime is 2108646401. The next prime is 2108646409. The reversal of 2108646408 is 8046468012.

2108646408 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2108646401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230433 + ... + 239408.

It is an arithmetic number, because the mean of its divisors is an integer number (95143005).

Almost surely, 2^2108646408 is an apocalyptic number.

It is an amenable number.

2108646408 is an abundant number, since it is smaller than the sum of its proper divisors (3980505912).

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

2108646408 is a wasteful number, since it uses less digits than its factorization.

2108646408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469878 (or 469874 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 2108646408 is about 45920.0000871080. Note that the first 4 decimals coincide. The cubic root of 2108646408 is about 1282.3342837685.

The spelling of 2108646408 in words is "two billion, one hundred eight million, six hundred forty-six thousand, four hundred eight".