165185357 has 2 divisors, whose sum is σ = 165185358. Its totient is φ = 165185356.

The previous prime is 165185327. The next prime is 165185369. The reversal of 165185357 is 753581561.

165185357 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148693636 + 16491721 = 12194^2 + 4061^2 .

It is a cyclic number.

It is not a de Polignac number, because 165185357 - 2¹⁰ = 165184333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165185327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82592678 + 82592679.

It is an arithmetic number, because the mean of its divisors is an integer number (82592679).

Almost surely, 2^165185357 is an apocalyptic number.

It is an amenable number.

165185357 is a deficient number, since it is larger than the sum of its proper divisors (1).

165185357 is an equidigital number, since it uses as much as digits as its factorization.

165185357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 126000, while the sum is 41.

The square root of 165185357 is about 12852.4455649499. The cubic root of 165185357 is about 548.6859616742.

The spelling of 165185357 in words is "one hundred sixty-five million, one hundred eighty-five thousand, three hundred fifty-seven".