80318889 has 18 divisors (see below), whose sum is σ = 134958330. Its totient is φ = 45896256.

The previous prime is 80318881. The next prime is 80318941. The reversal of 80318889 is 98881308.

It can be written as a sum of positive squares in only one way, i.e., 62678889 + 17640000 = 7917^2 + 4200^2 .

It is not a de Polignac number, because 80318889 - 2³ = 80318881 is a prime.

It is a super-2 number, since 2×80318889² = 12902247860388642, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80318881) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 90624 + ... + 91505.

It is an arithmetic number, because the mean of its divisors is an integer number (7497685).

Almost surely, 2^80318889 is an apocalyptic number.

It is an amenable number.

80318889 is a deficient number, since it is larger than the sum of its proper divisors (54639441).

80318889 is a wasteful number, since it uses less digits than its factorization.

80318889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182149 (or 182139 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The square root of 80318889 is about 8962.0806178030. The cubic root of 80318889 is about 431.4587002450.

The spelling of 80318889 in words is "eighty million, three hundred eighteen thousand, eight hundred eighty-nine".