2149156880 has 160 divisors (see below), whose sum is σ = 5760464640. Its totient is φ = 739031040.

The previous prime is 2149156873. The next prime is 2149156897. The reversal of 2149156880 is 886519412.

It is a Cunningham number, because it is equal to 46359²-1.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1204469 + ... + 1206251.

It is an arithmetic number, because the mean of its divisors is an integer number (36002904).

Almost surely, 2^2149156880 is an apocalyptic number.

2149156880 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 2149156880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2880232320).

2149156880 is an abundant number, since it is smaller than the sum of its proper divisors (3611307760).

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

2149156880 is a wasteful number, since it uses less digits than its factorization.

2149156880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889 (or 1883 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 2149156880 is about 46358.9999892146. Note that the first 4 decimals coincide. The cubic root of 2149156880 is about 1290.4941479667.

The spelling of 2149156880 in words is "two billion, one hundred forty-nine million, one hundred fifty-six thousand, eight hundred eighty".