8181936 has 60 divisors (see below), whose sum is σ = 26172432. Its totient is φ = 2337408.

The previous prime is 8181931. The next prime is 8181937. The reversal of 8181936 is 6391818.

8181936 is digitally balanced in base 5 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

8181936 is strictly pandigital in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 8181936.

It is not an unprimeable number, because it can be changed into a prime (8181931) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3051 + ... + 5066.

Almost surely, 2^8181936 is an apocalyptic number.

It is an amenable number.

8181936 is an abundant number, since it is smaller than the sum of its proper divisors (17990496).

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

8181936 is a wasteful number, since it uses less digits than its factorization.

8181936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8138 (or 8129 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 8181936 is about 2860.4083624546. The cubic root of 8181936 is about 201.5047830779.

The spelling of 8181936 in words is "eight million, one hundred eighty-one thousand, nine hundred thirty-six".