198530582538 has 16 divisors (see below), whose sum is σ = 398765293056. Its totient is φ = 65892839520.

The previous prime is 198530582531. The next prime is 198530582543. The reversal of 198530582538 is 835285035891.

It is not an unprimeable number, because it can be changed into a prime (198530582531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71003818 + ... + 71006613.

It is an arithmetic number, because the mean of its divisors is an integer number (24922830816).

Almost surely, 2^198530582538 is an apocalyptic number.

198530582538 is an abundant number, since it is smaller than the sum of its proper divisors (200234710518).

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

198530582538 is a wasteful number, since it uses less digits than its factorization.

198530582538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142010669.

The product of its (nonzero) digits is 10368000, while the sum is 57.

The spelling of 198530582538 in words is "one hundred ninety-eight billion, five hundred thirty million, five hundred eighty-two thousand, five hundred thirty-eight".