2165629559 has 2 divisors, whose sum is σ = 2165629560. Its totient is φ = 2165629558.

The previous prime is 2165629493. The next prime is 2165629601. The reversal of 2165629559 is 9559265612.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2165629559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2165619559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082814779 + 1082814780.

It is an arithmetic number, because the mean of its divisors is an integer number (1082814780).

Almost surely, 2^2165629559 is an apocalyptic number.

2165629559 is a deficient number, since it is larger than the sum of its proper divisors (1).

2165629559 is an equidigital number, since it uses as much as digits as its factorization.

2165629559 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 2165629559 is about 46536.3251557318. The cubic root of 2165629559 is about 1293.7828506552.

It can be divided in two parts, 21656 and 29559, that added together give a palindrome (51215).

The spelling of 2165629559 in words is "two billion, one hundred sixty-five million, six hundred twenty-nine thousand, five hundred fifty-nine".