165161363 has 2 divisors, whose sum is σ = 165161364. Its totient is φ = 165161362.

The previous prime is 165161333. The next prime is 165161383. The reversal of 165161363 is 363161561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165161363 - 2⁶ = 165161299 is a prime.

It is not a weakly prime, because it can be changed into another prime (165161333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82580681 + 82580682.

It is an arithmetic number, because the mean of its divisors is an integer number (82580682).

Almost surely, 2^165161363 is an apocalyptic number.

165161363 is a deficient number, since it is larger than the sum of its proper divisors (1).

165161363 is an equidigital number, since it uses as much as digits as its factorization.

165161363 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 32.

The square root of 165161363 is about 12851.5120900227. The cubic root of 165161363 is about 548.6593939270.

The spelling of 165161363 in words is "one hundred sixty-five million, one hundred sixty-one thousand, three hundred sixty-three".