162224729 has 2 divisors, whose sum is σ = 162224730. Its totient is φ = 162224728.

The previous prime is 162224707. The next prime is 162224737. The reversal of 162224729 is 927422261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151856329 + 10368400 = 12323^2 + 3220^2 .

It is a cyclic number.

It is not a de Polignac number, because 162224729 - 2⁸ = 162224473 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (162224759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81112364 + 81112365.

It is an arithmetic number, because the mean of its divisors is an integer number (81112365).

Almost surely, 2^162224729 is an apocalyptic number.

It is an amenable number.

162224729 is a deficient number, since it is larger than the sum of its proper divisors (1).

162224729 is an equidigital number, since it uses as much as digits as its factorization.

162224729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 35.

The square root of 162224729 is about 12736.7471907077. The cubic root of 162224729 is about 545.3881352641.

The spelling of 162224729 in words is "one hundred sixty-two million, two hundred twenty-four thousand, seven hundred twenty-nine".