2129880864 has 48 divisors (see below), whose sum is σ = 5602540608. Its totient is φ = 708486912.

The previous prime is 2129880793. The next prime is 2129880871. The reversal of 2129880864 is 4680889212.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23974 + ... + 69530.

It is an arithmetic number, because the mean of its divisors is an integer number (116719596).

Almost surely, 2^2129880864 is an apocalyptic number.

2129880864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2129880864 is an abundant number, since it is smaller than the sum of its proper divisors (3472659744).

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

2129880864 is a wasteful number, since it uses less digits than its factorization.

2129880864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46057 (or 46049 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 48.

The square root of 2129880864 is about 46150.6323250289. The cubic root of 2129880864 is about 1286.6243623355.

The spelling of 2129880864 in words is "two billion, one hundred twenty-nine million, eight hundred eighty thousand, eight hundred sixty-four".