81852182 has 16 divisors (see below), whose sum is σ = 124265232. Its totient is φ = 40433760.

The previous prime is 81852167. The next prime is 81852223. The reversal of 81852182 is 28125818.

It is a super-2 number, since 2×81852182² = 13399559396322248, which contains 22 as substring.

It is a congruent 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, 61973 + ... + 63279.

It is an arithmetic number, because the mean of its divisors is an integer number (7766577).

Almost surely, 2^81852182 is an apocalyptic number.

81852182 is a deficient number, since it is larger than the sum of its proper divisors (42413050).

81852182 is a wasteful number, since it uses less digits than its factorization.

81852182 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663.

The product of its digits is 10240, while the sum is 35.

The square root of 81852182 is about 9047.2195728854. The cubic root of 81852182 is about 434.1869376680.

The spelling of 81852182 in words is "eighty-one million, eight hundred fifty-two thousand, one hundred eighty-two".