162444881 has 2 divisors, whose sum is σ = 162444882. Its totient is φ = 162444880.

The previous prime is 162444859. The next prime is 162444899. The reversal of 162444881 is 188444261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161696656 + 748225 = 12716^2 + 865^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162444881 is a prime.

It is a super-2 number, since 2×162444881² = 52776678726208322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (162444481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81222440 + 81222441.

It is an arithmetic number, because the mean of its divisors is an integer number (81222441).

Almost surely, 2^162444881 is an apocalyptic number.

It is an amenable number.

162444881 is a deficient number, since it is larger than the sum of its proper divisors (1).

162444881 is an equidigital number, since it uses as much as digits as its factorization.

162444881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 49152, while the sum is 38.

The square root of 162444881 is about 12745.3866555707. The cubic root of 162444881 is about 545.6347355950.

The spelling of 162444881 in words is "one hundred sixty-two million, four hundred forty-four thousand, eight hundred eighty-one".