198369671838 has 32 divisors (see below), whose sum is σ = 427292845056. Its totient is φ = 61031809248.

The previous prime is 198369671827. The next prime is 198369671891. The reversal of 198369671838 is 838176963891.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 914731 + ... + 1110617.

It is an arithmetic number, because the mean of its divisors is an integer number (13352901408).

Almost surely, 2^198369671838 is an apocalyptic number.

198369671838 is an abundant number, since it is smaller than the sum of its proper divisors (228923173218).

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

198369671838 is a wasteful number, since it uses less digits than its factorization.

198369671838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208888.

The product of its digits is 94058496, while the sum is 69.

The spelling of 198369671838 in words is "one hundred ninety-eight billion, three hundred sixty-nine million, six hundred seventy-one thousand, eight hundred thirty-eight".