80927818 has 8 divisors (see below), whose sum is σ = 122278212. Its totient is φ = 40168416.

The previous prime is 80927801. The next prime is 80927827. The reversal of 80927818 is 81872908.

It can be written as a sum of positive squares in 2 ways, for example, as 75986089 + 4941729 = 8717^2 + 2223^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×80927818² = 13098623452482248, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147405 + ... + 147952.

Almost surely, 2^80927818 is an apocalyptic number.

80927818 is a deficient number, since it is larger than the sum of its proper divisors (41350394).

80927818 is a wasteful number, since it uses less digits than its factorization.

80927818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295496.

The product of its (nonzero) digits is 64512, while the sum is 43.

The square root of 80927818 is about 8995.9889951022. The cubic root of 80927818 is about 432.5463088730.

The spelling of 80927818 in words is "eighty million, nine hundred twenty-seven thousand, eight hundred eighteen".