80898181 has 32 divisors (see below), whose sum is σ = 106444800. Its totient is φ = 59693760.

The previous prime is 80898161. The next prime is 80898187. The reversal of 80898181 is 18189808.

It is not a de Polignac number, because 80898181 - 2⁵ = 80898149 is a prime.

It is a super-2 number, since 2×80898181² = 13089031378217522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80898187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122430 + ... + 123088.

It is an arithmetic number, because the mean of its divisors is an integer number (3326400).

Almost surely, 2^80898181 is an apocalyptic number.

It is an amenable number.

80898181 is a deficient number, since it is larger than the sum of its proper divisors (25546619).

80898181 is a wasteful number, since it uses less digits than its factorization.

80898181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769.

The product of its (nonzero) digits is 36864, while the sum is 43.

The square root of 80898181 is about 8994.3416101458. The cubic root of 80898181 is about 432.4935007432.

It can be divided in two parts, 808 and 98181, that added together give a palindrome (98989).

The spelling of 80898181 in words is "eighty million, eight hundred ninety-eight thousand, one hundred eighty-one".