162720163 has 2 divisors, whose sum is σ = 162720164. Its totient is φ = 162720162.

The previous prime is 162720137. The next prime is 162720197. The reversal of 162720163 is 361027261.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162720163 is a prime.

It is not a weakly prime, because it can be changed into another prime (162720763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81360081 + 81360082.

It is an arithmetic number, because the mean of its divisors is an integer number (81360082).

Almost surely, 2^162720163 is an apocalyptic number.

162720163 is a deficient number, since it is larger than the sum of its proper divisors (1).

162720163 is an equidigital number, since it uses as much as digits as its factorization.

162720163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 162720163 is about 12756.1813643425. The cubic root of 162720163 is about 545.9427757834.

The spelling of 162720163 in words is "one hundred sixty-two million, seven hundred twenty thousand, one hundred sixty-three".