198544545 has 24 divisors (see below), whose sum is σ = 352150656. Its totient is φ = 103426848.

The previous prime is 198544529. The next prime is 198544559. The reversal of 198544545 is 545445891.

198544545 is a `hidden beast` number, since 198 + 5 + 4 + 454 + 5 = 666.

198544545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 198544545 - 2⁴ = 198544529 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 198544545.

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, 49369 + ... + 53238.

It is an arithmetic number, because the mean of its divisors is an integer number (14672944).

Almost surely, 2^198544545 is an apocalyptic number.

198544545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

198544545 is a deficient number, since it is larger than the sum of its proper divisors (153606111).

198544545 is a wasteful number, since it uses less digits than its factorization.

198544545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102661 (or 102658 counting only the distinct ones).

The product of its digits is 576000, while the sum is 45.

The square root of 198544545 is about 14090.5835578233. The cubic root of 198544545 is about 583.3815004217.

The spelling of 198544545 in words is "one hundred ninety-eight million, five hundred forty-four thousand, five hundred forty-five".