80518305 has 32 divisors (see below), whose sum is σ = 147573504. Its totient is φ = 36723456.

The previous prime is 80518279. The next prime is 80518313. The reversal of 80518305 is 50381508.

It is a happy number.

It is not a de Polignac number, because 80518305 - 2⁷ = 80518177 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78979 + ... + 79991.

It is an arithmetic number, because the mean of its divisors is an integer number (4611672).

Almost surely, 2^80518305 is an apocalyptic number.

It is an amenable number.

80518305 is a deficient number, since it is larger than the sum of its proper divisors (67055199).

80518305 is a wasteful number, since it uses less digits than its factorization.

80518305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 80518305 is about 8973.1992622476. The cubic root of 80518305 is about 431.8154808259.

It can be divided in two parts, 805 and 18305, that added together give a triangular number (19110 = T₁₉₅).

The spelling of 80518305 in words is "eighty million, five hundred eighteen thousand, three hundred five".