2159553839 has 2 divisors, whose sum is σ = 2159553840. Its totient is φ = 2159553838.

The previous prime is 2159553827. The next prime is 2159553871. The reversal of 2159553839 is 9383559512.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2159553839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2159558839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1079776919 + 1079776920.

It is an arithmetic number, because the mean of its divisors is an integer number (1079776920).

Almost surely, 2^2159553839 is an apocalyptic number.

2159553839 is a deficient number, since it is larger than the sum of its proper divisors (1).

2159553839 is an equidigital number, since it uses as much as digits as its factorization.

2159553839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1458000, while the sum is 50.

The square root of 2159553839 is about 46470.9999784812. Note that the first 4 decimals coincide. The cubic root of 2159553839 is about 1292.5718056001.

The spelling of 2159553839 in words is "two billion, one hundred fifty-nine million, five hundred fifty-three thousand, eight hundred thirty-nine".