80745018 has 16 divisors (see below), whose sum is σ = 166699776. Its totient is φ = 26046720.

The previous prime is 80745011. The next prime is 80745043. The reversal of 80745018 is 81054708.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 80745018.

It is not an unprimeable number, because it can be changed into a prime (80745011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216871 + ... + 217242.

It is an arithmetic number, because the mean of its divisors is an integer number (10418736).

Almost surely, 2^80745018 is an apocalyptic number.

80745018 is an abundant number, since it is smaller than the sum of its proper divisors (85954758).

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

80745018 is a wasteful number, since it uses less digits than its factorization.

80745018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434149.

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 80745018 is about 8985.8231676347. The cubic root of 80745018 is about 432.2203843799.

The spelling of 80745018 in words is "eighty million, seven hundred forty-five thousand, eighteen".