2121613608 has 16 divisors (see below), whose sum is σ = 5304034080. Its totient is φ = 707204528.

The previous prime is 2121613601. The next prime is 2121613609. The reversal of 2121613608 is 8063161212.

It is not an unprimeable number, because it can be changed into a prime (2121613601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44200260 + ... + 44200307.

It is an arithmetic number, because the mean of its divisors is an integer number (331502130).

Almost surely, 2^2121613608 is an apocalyptic number.

It is an amenable number.

2121613608 is an abundant number, since it is smaller than the sum of its proper divisors (3182420472).

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

2121613608 is a wasteful number, since it uses less digits than its factorization.

2121613608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88400576 (or 88400572 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 2121613608 is about 46060.9770630194. The cubic root of 2121613608 is about 1284.9575014585.

The spelling of 2121613608 in words is "two billion, one hundred twenty-one million, six hundred thirteen thousand, six hundred eight".