2159575020 has 192 divisors, whose sum is σ = 6885244800. Its totient is φ = 568829952.

The previous prime is 2159575013. The next prime is 2159575049. The reversal of 2159575020 is 205759512.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4242526 + ... + 4243034.

It is an arithmetic number, because the mean of its divisors is an integer number (35860650).

Almost surely, 2^2159575020 is an apocalyptic number.

2159575020 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 2159575020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3442622400).

2159575020 is an abundant number, since it is smaller than the sum of its proper divisors (4725669780).

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

2159575020 is an equidigital number, since it uses as much as digits as its factorization.

2159575020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636 (or 616 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 36.

The square root of 2159575020 is about 46471.2278727386. The cubic root of 2159575020 is about 1292.5760314535.

The spelling of 2159575020 in words is "two billion, one hundred fifty-nine million, five hundred seventy-five thousand, twenty".