83188138 has 16 divisors (see below), whose sum is σ = 138160224. Its totient is φ = 37247760.

The previous prime is 83188121. The next prime is 83188141.

83188138 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 83188138.

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, 26745 + ... + 29692.

It is an arithmetic number, because the mean of its divisors is an integer number (8635014).

Almost surely, 2^83188138 is an apocalyptic number.

83188138 is a deficient number, since it is larger than the sum of its proper divisors (54972086).

83188138 is a wasteful number, since it uses less digits than its factorization.

83188138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56517.

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

The square root of 83188138 is about 9120.7531487263. The cubic root of 83188138 is about 436.5364052794.

The spelling of 83188138 in words is "eighty-three million, one hundred eighty-eight thousand, one hundred thirty-eight".