2159756341 has 8 divisors (see below), whose sum is σ = 2233020600. Its totient is φ = 2087275968.

The previous prime is 2159756311. The next prime is 2159756351. The reversal of 2159756341 is 1436579512.

It can be written as a sum of positive squares in 4 ways, for example, as 1782225 + 2157974116 = 1335^2 + 46454^2 .

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

It is not a de Polignac number, because 2159756341 - 2⁵ = 2159756309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159756311) by changing a digit.

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, 190366 + ... + 201391.

It is an arithmetic number, because the mean of its divisors is an integer number (279127575).

Almost surely, 2^2159756341 is an apocalyptic number.

It is an amenable number.

2159756341 is a deficient number, since it is larger than the sum of its proper divisors (73264259).

2159756341 is a wasteful number, since it uses less digits than its factorization.

2159756341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391943.

The product of its digits is 226800, while the sum is 43.

The square root of 2159756341 is about 46473.1787270895. The cubic root of 2159756341 is about 1292.6122059504.

The spelling of 2159756341 in words is "two billion, one hundred fifty-nine million, seven hundred fifty-six thousand, three hundred forty-one".