198645544 has 16 divisors (see below), whose sum is σ = 394370100. Its totient is φ = 93480192.

The previous prime is 198645523. The next prime is 198645571. The reversal of 198645544 is 445546891.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 196280100 + 2365444 = 14010^2 + 1538^2 .

It is a junction number, because it is equal to n+sod(n) for n = 198645494 and 198645503.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 730179 + ... + 730450.

Almost surely, 2^198645544 is an apocalyptic number.

It is an amenable number.

198645544 is a deficient number, since it is larger than the sum of its proper divisors (195724556).

198645544 is a wasteful number, since it uses less digits than its factorization.

198645544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460652 (or 1460648 counting only the distinct ones).

The product of its digits is 691200, while the sum is 46.

The square root of 198645544 is about 14094.1670204379. The cubic root of 198645544 is about 583.4804051117.

The spelling of 198645544 in words is "one hundred ninety-eight million, six hundred forty-five thousand, five hundred forty-four".