83198913 has 12 divisors (see below), whose sum is σ = 129043440. Its totient is φ = 47542152.

The previous prime is 83198873. The next prime is 83198917. The reversal of 83198913 is 31989138.

It is a happy number.

It is not a de Polignac number, because 83198913 - 2¹⁰ = 83197889 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (83198917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 282843 + ... + 283136.

It is an arithmetic number, because the mean of its divisors is an integer number (10753620).

Almost surely, 2^83198913 is an apocalyptic number.

It is an amenable number.

83198913 is a deficient number, since it is larger than the sum of its proper divisors (45844527).

83198913 is a wasteful number, since it uses less digits than its factorization.

83198913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565996 (or 565989 counting only the distinct ones).

The product of its digits is 46656, while the sum is 42.

The square root of 83198913 is about 9121.3438154693. The cubic root of 83198913 is about 436.5552520238. Note that the first 3 decimals are identical.

The spelling of 83198913 in words is "eighty-three million, one hundred ninety-eight thousand, nine hundred thirteen".