83181868 has 24 divisors (see below), whose sum is σ = 181488384. Its totient is φ = 32408400.

The previous prime is 83181863. The next prime is 83181893. The reversal of 83181868 is 86818138.

83181868 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

83181868 is strictly pandigital in base 9.

It is not an unprimeable number, because it can be changed into a prime (83181863) 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, 134728 + ... + 135343.

It is an arithmetic number, because the mean of its divisors is an integer number (7562016).

Almost surely, 2^83181868 is an apocalyptic number.

It is an amenable number.

83181868 is an abundant number, since it is smaller than the sum of its proper divisors (98306516).

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

83181868 is a wasteful number, since it uses less digits than its factorization.

83181868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270093 (or 270091 counting only the distinct ones).

The product of its digits is 73728, while the sum is 43.

The square root of 83181868 is about 9120.4094206346. The cubic root of 83181868 is about 436.5254375618.

The spelling of 83181868 in words is "eighty-three million, one hundred eighty-one thousand, eight hundred sixty-eight".