80471918 has 16 divisors (see below), whose sum is σ = 122238720. Its totient is φ = 39728376.

The previous prime is 80471887. The next prime is 80471953. The reversal of 80471918 is 81917408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111563 + ... + 112281.

It is an arithmetic number, because the mean of its divisors is an integer number (7639920).

Almost surely, 2^80471918 is an apocalyptic number.

80471918 is a deficient number, since it is larger than the sum of its proper divisors (41766802).

80471918 is a wasteful number, since it uses less digits than its factorization.

80471918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 80471918 is about 8970.6141372818. The cubic root of 80471918 is about 431.7325412073.

The spelling of 80471918 in words is "eighty million, four hundred seventy-one thousand, nine hundred eighteen".