8181112 has 8 divisors (see below), whose sum is σ = 15339600. Its totient is φ = 4090552.

The previous prime is 8181091. The next prime is 8181119. The reversal of 8181112 is 2111818.

It is a tau number, because it is divible by the number of its divisors (8).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8181119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511312 + ... + 511327.

It is an arithmetic number, because the mean of its divisors is an integer number (1917450).

Almost surely, 2^8181112 is an apocalyptic number.

It is an amenable number.

8181112 is a deficient number, since it is larger than the sum of its proper divisors (7158488).

8181112 is a wasteful number, since it uses less digits than its factorization.

8181112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022645 (or 1022641 counting only the distinct ones).

The product of its digits is 128, while the sum is 22.

The square root of 8181112 is about 2860.2643234498. The cubic root of 8181112 is about 201.4980183580.

The spelling of 8181112 in words is "eight million, one hundred eighty-one thousand, one hundred twelve".