8181316 has 24 divisors (see below), whose sum is σ = 16821504. Its totient is φ = 3432480.

The previous prime is 8181311. The next prime is 8181317. The reversal of 8181316 is 6131818.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (8181311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6580 + ... + 7723.

It is an arithmetic number, because the mean of its divisors is an integer number (700896).

Almost surely, 2^8181316 is an apocalyptic number.

It is an amenable number.

8181316 is an abundant number, since it is smaller than the sum of its proper divisors (8640188).

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

8181316 is a wasteful number, since it uses less digits than its factorization.

8181316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14331 (or 14329 counting only the distinct ones).

The product of its digits is 1152, while the sum is 28.

The square root of 8181316 is about 2860.2999842674. The cubic root of 8181316 is about 201.4996931610.

The spelling of 8181316 in words is "eight million, one hundred eighty-one thousand, three hundred sixteen".