2159856573 has 8 divisors (see below), whose sum is σ = 3291210048. Its totient is φ = 1234203744.

The previous prime is 2159856553. The next prime is 2159856581. The reversal of 2159856573 is 3756589512.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2159856573 - 2⁵ = 2159856541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159856553) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 51425136 + ... + 51425177.

It is an arithmetic number, because the mean of its divisors is an integer number (411401256).

Almost surely, 2^2159856573 is an apocalyptic number.

It is an amenable number.

2159856573 is a deficient number, since it is larger than the sum of its proper divisors (1131353475).

2159856573 is a wasteful number, since it uses less digits than its factorization.

2159856573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102850323.

The product of its digits is 2268000, while the sum is 51.

The square root of 2159856573 is about 46474.2571000333. The cubic root of 2159856573 is about 1292.6322018947.

The spelling of 2159856573 in words is "two billion, one hundred fifty-nine million, eight hundred fifty-six thousand, five hundred seventy-three".