814961818 has 16 divisors (see below), whose sum is σ = 1334237184. Its totient is φ = 370252960.

The previous prime is 814961809. The next prime is 814961839. The reversal of 814961818 is 818169418.

It is an alternating number because its digits alternate between even and odd.

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 7 ways as a sum of consecutive naturals, for example, 42471 + ... + 58597.

It is an arithmetic number, because the mean of its divisors is an integer number (83389824).

Almost surely, 2^814961818 is an apocalyptic number.

814961818 is a deficient number, since it is larger than the sum of its proper divisors (519275366).

814961818 is a wasteful number, since it uses less digits than its factorization.

814961818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18437.

The product of its digits is 110592, while the sum is 46.

The square root of 814961818 is about 28547.5361108450. The cubic root of 814961818 is about 934.0692762100.

The spelling of 814961818 in words is "eight hundred fourteen million, nine hundred sixty-one thousand, eight hundred eighteen".