1806018198 has 16 divisors (see below), whose sum is σ = 3612828096. Its totient is φ = 601874120.

The previous prime is 1806018169. The next prime is 1806018233. The reversal of 1806018198 is 8918106081.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 936 + ... + 60107.

It is an arithmetic number, because the mean of its divisors is an integer number (225801756).

Almost surely, 2^1806018198 is an apocalyptic number.

1806018198 is an abundant number, since it is smaller than the sum of its proper divisors (1806809898).

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

1806018198 is a wasteful number, since it uses less digits than its factorization.

1806018198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65979.

The product of its (nonzero) digits is 27648, while the sum is 42.

The square root of 1806018198 is about 42497.2728301476. The cubic root of 1806018198 is about 1217.7945908606.

The spelling of 1806018198 in words is "one billion, eight hundred six million, eighteen thousand, one hundred ninety-eight".