198344865546 has 12 divisors (see below), whose sum is σ = 429747208722. Its totient is φ = 66114955176.

The previous prime is 198344865541. The next prime is 198344865559. The reversal of 198344865546 is 645568443891.

198344865546 is a `hidden beast` number, since 1 + 9 + 8 + 3 + 4 + 4 + 86 + 5 + 546 = 666.

198344865546 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 196372173321 + 1972692225 = 443139^2 + 44415^2 .

It is a super-3 number, since 3×198344865546³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (198344865541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5509579581 + ... + 5509579616.

Almost surely, 2^198344865546 is an apocalyptic number.

198344865546 is an abundant number, since it is smaller than the sum of its proper divisors (231402343176).

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

198344865546 is a wasteful number, since it uses less digits than its factorization.

198344865546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11019159205 (or 11019159202 counting only the distinct ones).

The product of its digits is 99532800, while the sum is 63.

The spelling of 198344865546 in words is "one hundred ninety-eight billion, three hundred forty-four million, eight hundred sixty-five thousand, five hundred forty-six".