198509480 has 32 divisors (see below), whose sum is σ = 481005000. Its totient is φ = 73295616.

The previous prime is 198509447. The next prime is 198509483. The reversal of 198509480 is 84905891.

It can be written as a sum of positive squares in 4 ways, for example, as 56280004 + 142229476 = 7502^2 + 11926^2 .

It is not an unprimeable number, because it can be changed into a prime (198509483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190355 + ... + 191394.

Almost surely, 2^198509480 is an apocalyptic number.

198509480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198509480 is an abundant number, since it is smaller than the sum of its proper divisors (282495520).

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

198509480 is a wasteful number, since it uses less digits than its factorization.

198509480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381773 (or 381769 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 198509480 is about 14089.3392321996. The cubic root of 198509480 is about 583.3471546839.

The spelling of 198509480 in words is "one hundred ninety-eight million, five hundred nine thousand, four hundred eighty".