198224343550 has 12 divisors (see below), whose sum is σ = 368697279096. Its totient is φ = 79289737400.

The previous prime is 198224343503. The next prime is 198224343557. The reversal of 198224343550 is 55343422891.

It is a self number, because there is not a number n which added to its sum of digits gives 198224343550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198224343557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1982243386 + ... + 1982243485.

It is an arithmetic number, because the mean of its divisors is an integer number (30724773258).

Almost surely, 2^198224343550 is an apocalyptic number.

198224343550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198224343550 is a deficient number, since it is larger than the sum of its proper divisors (170472935546).

198224343550 is a wasteful number, since it uses less digits than its factorization.

198224343550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3964486883 (or 3964486878 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 46.

The spelling of 198224343550 in words is "one hundred ninety-eight billion, two hundred twenty-four million, three hundred forty-three thousand, five hundred fifty".