2159539819 has 2 divisors, whose sum is σ = 2159539820. Its totient is φ = 2159539818.

The previous prime is 2159539793. The next prime is 2159539843. The reversal of 2159539819 is 9189359512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2159539819 - 2⁵ = 2159539787 is a prime.

It is a super-2 number, since 2×2159539819² = 9327224459693105522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2159539849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1079769909 + 1079769910.

It is an arithmetic number, because the mean of its divisors is an integer number (1079769910).

Almost surely, 2^2159539819 is an apocalyptic number.

2159539819 is a deficient number, since it is larger than the sum of its proper divisors (1).

2159539819 is an equidigital number, since it uses as much as digits as its factorization.

2159539819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 874800, while the sum is 52.

The square root of 2159539819 is about 46470.8491314717. The cubic root of 2159539819 is about 1292.5690084334.

The spelling of 2159539819 in words is "two billion, one hundred fifty-nine million, five hundred thirty-nine thousand, eight hundred nineteen".