198963783942 has 128 divisors (see below), whose sum is σ = 511950163968. Its totient is φ = 50042966400.

The previous prime is 198963783937. The next prime is 198963783959. The reversal of 198963783942 is 249387369891.

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 63 ways as a sum of consecutive naturals, for example, 3579253 + ... + 3634415.

It is an arithmetic number, because the mean of its divisors is an integer number (3999610656).

Almost surely, 2^198963783942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198963783942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255975081984).

198963783942 is an abundant number, since it is smaller than the sum of its proper divisors (312986380026).

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

198963783942 is a wasteful number, since it uses less digits than its factorization.

198963783942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55434.

The product of its digits is 141087744, while the sum is 69.

The spelling of 198963783942 in words is "one hundred ninety-eight billion, nine hundred sixty-three million, seven hundred eighty-three thousand, nine hundred forty-two".