80218518 has 8 divisors (see below), whose sum is σ = 160437048. Its totient is φ = 26739504.

The previous prime is 80218517. The next prime is 80218531. The reversal of 80218518 is 81581208.

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

80218518 is an admirable number.

It is a Curzon number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80218511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6684871 + ... + 6684882.

It is an arithmetic number, because the mean of its divisors is an integer number (20054631).

Almost surely, 2^80218518 is an apocalyptic number.

80218518 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

80218518 is a wasteful number, since it uses less digits than its factorization.

80218518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13369758.

The product of its (nonzero) digits is 5120, while the sum is 33.

The square root of 80218518 is about 8956.4791073278. The cubic root of 80218518 is about 431.2789003106.

The spelling of 80218518 in words is "eighty million, two hundred eighteen thousand, five hundred eighteen".