80881169 has 2 divisors, whose sum is σ = 80881170. Its totient is φ = 80881168.

The previous prime is 80881159. The next prime is 80881211. The reversal of 80881169 is 96118808.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72471169 + 8410000 = 8513^2 + 2900^2 .

It is a cyclic number.

It is not a de Polignac number, because 80881169 - 2¹² = 80877073 is a prime.

It is a super-2 number, since 2×80881169² = 13083526997613122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80881159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40440584 + 40440585.

It is an arithmetic number, because the mean of its divisors is an integer number (40440585).

Almost surely, 2^80881169 is an apocalyptic number.

It is an amenable number.

80881169 is a deficient number, since it is larger than the sum of its proper divisors (1).

80881169 is an equidigital number, since it uses as much as digits as its factorization.

80881169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 41.

The square root of 80881169 is about 8993.3958547370. The cubic root of 80881169 is about 432.4631824050.

The spelling of 80881169 in words is "eighty million, eight hundred eighty-one thousand, one hundred sixty-nine".