80518818 has 16 divisors (see below), whose sum is σ = 161292096. Its totient is φ = 26797200.

The previous prime is 80518813. The next prime is 80518853. The reversal of 80518818 is 81881508.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80518813) 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 7 ways as a sum of consecutive naturals, for example, 6358 + ... + 14193.

It is an arithmetic number, because the mean of its divisors is an integer number (10080756).

Almost surely, 2^80518818 is an apocalyptic number.

80518818 is an abundant number, since it is smaller than the sum of its proper divisors (80773278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80518818 is a wasteful number, since it uses less digits than its factorization.

80518818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21209.

The product of its (nonzero) digits is 20480, while the sum is 39.

The square root of 80518818 is about 8973.2278473245. The cubic root of 80518818 is about 431.8163978880.

The spelling of 80518818 in words is "eighty million, five hundred eighteen thousand, eight hundred eighteen".