83811838 has 16 divisors (see below), whose sum is σ = 137487600. Its totient is φ = 38001600.

The previous prime is 83811809. The next prime is 83811863.

83811838 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 83811838.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4738 + ... + 13786.

It is an arithmetic number, because the mean of its divisors is an integer number (8592975).

Almost surely, 2^83811838 is an apocalyptic number.

83811838 is a deficient number, since it is larger than the sum of its proper divisors (53675762).

83811838 is a wasteful number, since it uses less digits than its factorization.

83811838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9483.

The product of its digits is 36864, while the sum is 40.

The square root of 83811838 is about 9154.8805562935. The cubic root of 83811838 is about 437.6246619446.

The spelling of 83811838 in words is "eighty-three million, eight hundred eleven thousand, eight hundred thirty-eight".