83842218 has 12 divisors (see below), whose sum is σ = 181658178. Its totient is φ = 27947400.

The previous prime is 83842207. The next prime is 83842247. The reversal of 83842218 is 81224838.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 83229129 + 613089 = 9123^2 + 783^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2328933 + ... + 2328968.

Almost surely, 2^83842218 is an apocalyptic number.

83842218 is an abundant number, since it is smaller than the sum of its proper divisors (97815960).

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

83842218 is a wasteful number, since it uses less digits than its factorization.

83842218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4657909 (or 4657906 counting only the distinct ones).

The product of its digits is 24576, while the sum is 36.

The square root of 83842218 is about 9156.5396302315. The cubic root of 83842218 is about 437.6775320860.

The spelling of 83842218 in words is "eighty-three million, eight hundred forty-two thousand, two hundred eighteen".