183897842 has 18 divisors (see below), whose sum is σ = 283683087. Its totient is φ = 89407836.

The previous prime is 183897841. The next prime is 183897851. The reversal of 183897842 is 248798381.

183897842 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 91948921 + 91948921 = 9589^2 + 9589^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=9589.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (183897841) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 824543 + ... + 824765.

Almost surely, 2^183897842 is an apocalyptic number.

183897842 is a deficient number, since it is larger than the sum of its proper divisors (99785245).

183897842 is an frugal number, since it uses more digits than its factorization.

183897842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534 (or 268 counting only the distinct ones).

The product of its digits is 774144, while the sum is 50.

The square root of 183897842 is about 13560.8938495956. The cubic root of 183897842 is about 568.6681142506.

Multiplying 183897842 by its sum of digits (50), we get a square (9194892100 = 95890²).

The spelling of 183897842 in words is "one hundred eighty-three million, eight hundred ninety-seven thousand, eight hundred forty-two".