2159391828 has 24 divisors (see below), whose sum is σ = 5496634080. Its totient is φ = 654361120.

The previous prime is 2159391803. The next prime is 2159391841. The reversal of 2159391828 is 8281939512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8179383 + ... + 8179646.

It is an arithmetic number, because the mean of its divisors is an integer number (229026420).

Almost surely, 2^2159391828 is an apocalyptic number.

It is an amenable number.

2159391828 is an abundant number, since it is smaller than the sum of its proper divisors (3337242252).

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

2159391828 is a wasteful number, since it uses less digits than its factorization.

2159391828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16359047 (or 16359045 counting only the distinct ones).

The product of its digits is 311040, while the sum is 48.

The square root of 2159391828 is about 46469.2568049027. The cubic root of 2159391828 is about 1292.5394816259.

The spelling of 2159391828 in words is "two billion, one hundred fifty-nine million, three hundred ninety-one thousand, eight hundred twenty-eight".