2165620433 has 2 divisors, whose sum is σ = 2165620434. Its totient is φ = 2165620432.

The previous prime is 2165620421. The next prime is 2165620441. The reversal of 2165620433 is 3340265612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1114758544 + 1050861889 = 33388^2 + 32417^2 .

It is a cyclic number.

It is not a de Polignac number, because 2165620433 - 2¹² = 2165616337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2165620433.

It is not a weakly prime, because it can be changed into another prime (2165620403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082810216 + 1082810217.

It is an arithmetic number, because the mean of its divisors is an integer number (1082810217).

Almost surely, 2^2165620433 is an apocalyptic number.

It is an amenable number.

2165620433 is a deficient number, since it is larger than the sum of its proper divisors (1).

2165620433 is an equidigital number, since it uses as much as digits as its factorization.

2165620433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 2165620433 is about 46536.2271031935. The cubic root of 2165620433 is about 1293.7810333116.

The spelling of 2165620433 in words is "two billion, one hundred sixty-five million, six hundred twenty thousand, four hundred thirty-three".