872086418 has 20 divisors (see below), whose sum is σ = 1526068830. Its totient is φ = 373749264.

The previous prime is 872086409. The next prime is 872086429. The reversal of 872086418 is 814680278.

It can be written as a sum of positive squares in only one way, i.e., 718400809 + 153685609 = 26803^2 + 12397^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 86003 + ... + 95606.

Almost surely, 2^872086418 is an apocalyptic number.

872086418 is a deficient number, since it is larger than the sum of its proper divisors (653982412).

872086418 is an equidigital number, since it uses as much as digits as its factorization.

872086418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181639 (or 181618 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 44.

The square root of 872086418 is about 29531.1093255909. The cubic root of 872086418 is about 955.4027952836.

The spelling of 872086418 in words is "eight hundred seventy-two million, eighty-six thousand, four hundred eighteen".