2165536357 has 2 divisors, whose sum is σ = 2165536358. Its totient is φ = 2165536356.

The previous prime is 2165536301. The next prime is 2165536361. The reversal of 2165536357 is 7536355612.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2165413156 + 123201 = 46534^2 + 351^2 .

It is a cyclic number.

It is not a de Polignac number, because 2165536357 - 2²⁷ = 2031318629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2165536367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082768178 + 1082768179.

It is an arithmetic number, because the mean of its divisors is an integer number (1082768179).

Almost surely, 2^2165536357 is an apocalyptic number.

It is an amenable number.

2165536357 is a deficient number, since it is larger than the sum of its proper divisors (1).

2165536357 is an equidigital number, since it uses as much as digits as its factorization.

2165536357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 567000, while the sum is 43.

The square root of 2165536357 is about 46535.3237551862. The cubic root of 2165536357 is about 1293.7642902511.

The spelling of 2165536357 in words is "two billion, one hundred sixty-five million, five hundred thirty-six thousand, three hundred fifty-seven".