198238019804 has 12 divisors (see below), whose sum is σ = 378454401528. Its totient is φ = 90108190800.

The previous prime is 198238019789. The next prime is 198238019821. The reversal of 198238019804 is 408910832891.

It is a super-2 number, since 2×198238019804² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 2252704727 + ... + 2252704814.

It is an arithmetic number, because the mean of its divisors is an integer number (31537866794).

Almost surely, 2^198238019804 is an apocalyptic number.

It is an amenable number.

198238019804 is a deficient number, since it is larger than the sum of its proper divisors (180216381724).

198238019804 is a wasteful number, since it uses less digits than its factorization.

198238019804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4505409556 (or 4505409554 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 53.

The spelling of 198238019804 in words is "one hundred ninety-eight billion, two hundred thirty-eight million, nineteen thousand, eight hundred four".