80489818 has 8 divisors (see below), whose sum is σ = 121504212. Its totient is φ = 39988416.

The previous prime is 80489813. The next prime is 80489839. The reversal of 80489818 is 81898408.

It can be written as a sum of positive squares in 2 ways, for example, as 80335369 + 154449 = 8963^2 + 393^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×80489818² = 12957221603346248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80489813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127855 + ... + 128482.

Almost surely, 2^80489818 is an apocalyptic number.

80489818 is a deficient number, since it is larger than the sum of its proper divisors (41014394).

80489818 is a wasteful number, since it uses less digits than its factorization.

80489818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256496.

The product of its (nonzero) digits is 147456, while the sum is 46.

The square root of 80489818 is about 8971.6117838435. The cubic root of 80489818 is about 431.7645500527.

The spelling of 80489818 in words is "eighty million, four hundred eighty-nine thousand, eight hundred eighteen".