80988018 has 16 divisors (see below), whose sum is σ = 162656640. Its totient is φ = 26882576.

The previous prime is 80987993. The next prime is 80988023. The reversal of 80988018 is 81088908.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26805 + ... + 29672.

It is an arithmetic number, because the mean of its divisors is an integer number (10166040).

Almost surely, 2^80988018 is an apocalyptic number.

80988018 is an abundant number, since it is smaller than the sum of its proper divisors (81668622).

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

80988018 is a wasteful number, since it uses less digits than its factorization.

80988018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56721.

The product of its (nonzero) digits is 36864, while the sum is 42.

The square root of 80988018 is about 8999.3343087142. The cubic root of 80988018 is about 432.6535354298.

The spelling of 80988018 in words is "eighty million, nine hundred eighty-eight thousand, eighteen".