198918486 has 48 divisors (see below), whose sum is σ = 488582640. Its totient is φ = 57983040.

The previous prime is 198918463. The next prime is 198918493. The reversal of 198918486 is 684819891.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17925 + ... + 26816.

It is an arithmetic number, because the mean of its divisors is an integer number (10178805).

Almost surely, 2^198918486 is an apocalyptic number.

198918486 is an abundant number, since it is smaller than the sum of its proper divisors (289664154).

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

198918486 is a wasteful number, since it uses less digits than its factorization.

198918486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44781 (or 44778 counting only the distinct ones).

The product of its digits is 995328, while the sum is 54.

The square root of 198918486 is about 14103.8464966122. The cubic root of 198918486 is about 583.7475197941.

The spelling of 198918486 in words is "one hundred ninety-eight million, nine hundred eighteen thousand, four hundred eighty-six".