80471018 has 4 divisors (see below), whose sum is σ = 120706530. Its totient is φ = 40235508.

The previous prime is 80470963. The next prime is 80471021. The reversal of 80471018 is 81017408.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 79691329 + 779689 = 8927^2 + 883^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20117753 + ... + 20117756.

Almost surely, 2^80471018 is an apocalyptic number.

80471018 is a deficient number, since it is larger than the sum of its proper divisors (40235512).

80471018 is a wasteful number, since it uses less digits than its factorization.

80471018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40235511.

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 80471018 is about 8970.5639733520. The cubic root of 80471018 is about 431.7309316987.

The spelling of 80471018 in words is "eighty million, four hundred seventy-one thousand, eighteen".