2159913565 has 8 divisors (see below), whose sum is σ = 2623124448. Its totient is φ = 1707112080.

The previous prime is 2159913557. The next prime is 2159913593. The reversal of 2159913565 is 5653199512.

2159913565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2159913565 - 2³ = 2159913557 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 2601891 + ... + 2602720.

It is an arithmetic number, because the mean of its divisors is an integer number (327890556).

Almost surely, 2^2159913565 is an apocalyptic number.

It is an amenable number.

2159913565 is a deficient number, since it is larger than the sum of its proper divisors (463210883).

2159913565 is an equidigital number, since it uses as much as digits as its factorization.

2159913565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5204699.

The product of its digits is 364500, while the sum is 46.

The square root of 2159913565 is about 46474.8702526430. The cubic root of 2159913565 is about 1292.6435713296.

The spelling of 2159913565 in words is "two billion, one hundred fifty-nine million, nine hundred thirteen thousand, five hundred sixty-five".