80188218 has 80 divisors (see below), whose sum is σ = 207624384. Its totient is φ = 22861440.

The previous prime is 80188211. The next prime is 80188231. The reversal of 80188218 is 81288108.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (80188211) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 28971 + ... + 31617.

Almost surely, 2^80188218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80188218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103812192).

80188218 is an abundant number, since it is smaller than the sum of its proper divisors (127436166).

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

80188218 is a wasteful number, since it uses less digits than its factorization.

80188218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2689 (or 2680 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 36.

The square root of 80188218 is about 8954.7874346631. The cubic root of 80188218 is about 431.2245928321.

The spelling of 80188218 in words is "eighty million, one hundred eighty-eight thousand, two hundred eighteen".