1998363222 has 12 divisors (see below), whose sum is σ = 4329787020. Its totient is φ = 666121068.

The previous prime is 1998363197. The next prime is 1998363259. The reversal of 1998363222 is 2223638991.

It is a happy number.

1998363222 is a `hidden beast` number, since 1 + 9 + 9 + 8 + 3 + 632 + 2 + 2 = 666.

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 5 ways as a sum of consecutive naturals, for example, 55510072 + ... + 55510107.

It is an arithmetic number, because the mean of its divisors is an integer number (360815585).

Almost surely, 2^1998363222 is an apocalyptic number.

1998363222 is an abundant number, since it is smaller than the sum of its proper divisors (2331423798).

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

1998363222 is a wasteful number, since it uses less digits than its factorization.

1998363222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111020187 (or 111020184 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 1998363222 is about 44703.0560700272. The cubic root of 1998363222 is about 1259.5772542489.

The spelling of 1998363222 in words is "one billion, nine hundred ninety-eight million, three hundred sixty-three thousand, two hundred twenty-two".