8181611214 has 32 divisors (see below), whose sum is σ = 19007402496. Its totient is φ = 2299281120.

The previous prime is 8181611209. The next prime is 8181611227. The reversal of 8181611214 is 4121161818.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1594162 + ... + 1599285.

It is an arithmetic number, because the mean of its divisors is an integer number (593981328).

Almost surely, 2^8181611214 is an apocalyptic number.

8181611214 is an abundant number, since it is smaller than the sum of its proper divisors (10825791282).

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

8181611214 is a wasteful number, since it uses less digits than its factorization.

8181611214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3193520.

The product of its digits is 3072, while the sum is 33.

The square root of 8181611214 is about 90452.2593084330. The cubic root of 8181611214 is about 2015.0211676522.

The spelling of 8181611214 in words is "eight billion, one hundred eighty-one million, six hundred eleven thousand, two hundred fourteen".