165163139 has 2 divisors, whose sum is σ = 165163140. Its totient is φ = 165163138.

The previous prime is 165163099. The next prime is 165163147. The reversal of 165163139 is 931361561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165163139 - 2²⁰ = 164114563 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165163099 and 165163108.

It is not a weakly prime, because it can be changed into another prime (165163169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82581569 + 82581570.

It is an arithmetic number, because the mean of its divisors is an integer number (82581570).

Almost surely, 2^165163139 is an apocalyptic number.

165163139 is a deficient number, since it is larger than the sum of its proper divisors (1).

165163139 is an equidigital number, since it uses as much as digits as its factorization.

165163139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14580, while the sum is 35.

The square root of 165163139 is about 12851.5811867645. The cubic root of 165163139 is about 548.6613605201.

The spelling of 165163139 in words is "one hundred sixty-five million, one hundred sixty-three thousand, one hundred thirty-nine".