2159076917 has 4 divisors (see below), whose sum is σ = 2159575020. Its totient is φ = 2158578816.

The previous prime is 2159076889. The next prime is 2159076949. The reversal of 2159076917 is 7196709512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1450771921 + 708304996 = 38089^2 + 26614^2 .

It is a cyclic number.

It is not a de Polignac number, because 2159076917 - 2¹² = 2159072821 is a prime.

It is a super-2 number, since 2×2159076917² = 9323226267044449778, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159070917) 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 3 ways as a sum of consecutive naturals, for example, 242492 + ... + 251237.

It is an arithmetic number, because the mean of its divisors is an integer number (539893755).

Almost surely, 2^2159076917 is an apocalyptic number.

It is an amenable number.

2159076917 is a deficient number, since it is larger than the sum of its proper divisors (498103).

2159076917 is an equidigital number, since it uses as much as digits as its factorization.

2159076917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498102.

The product of its (nonzero) digits is 238140, while the sum is 47.

The square root of 2159076917 is about 46465.8683013672. The cubic root of 2159076917 is about 1292.4766468525.

The spelling of 2159076917 in words is "two billion, one hundred fifty-nine million, seventy-six thousand, nine hundred seventeen".