18842210 has 8 divisors (see below), whose sum is σ = 33915996. Its totient is φ = 7536880.

The previous prime is 18842191. The next prime is 18842231. The reversal of 18842210 is 1224881.

It can be written as a sum of positive squares in 2 ways, for example, as 15311569 + 3530641 = 3913^2 + 1879^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 18842210.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 942101 + ... + 942120.

Almost surely, 2^18842210 is an apocalyptic number.

18842210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18842210 is a deficient number, since it is larger than the sum of its proper divisors (15073786).

18842210 is a wasteful number, since it uses less digits than its factorization.

18842210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884228.

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 18842210 is about 4340.7614539387. The cubic root of 18842210 is about 266.0994314240.

The spelling of 18842210 in words is "eighteen million, eight hundred forty-two thousand, two hundred ten".