163841198138 has 8 divisors (see below), whose sum is σ = 245763946260. Its totient is φ = 81919882720.

The previous prime is 163841198117. The next prime is 163841198159. The reversal of 163841198138 is 831891148361.

It is an interprime number because it is at equal distance from previous prime (163841198117) and next prime (163841198159).

It can be written as a sum of positive squares in 2 ways, for example, as 142357553809 + 21483644329 = 377303^2 + 146573^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 163841198138.

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, 1073 + ... + 572436.

Almost surely, 2^163841198138 is an apocalyptic number.

163841198138 is a deficient number, since it is larger than the sum of its proper divisors (81922748122).

163841198138 is a wasteful number, since it uses less digits than its factorization.

163841198138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716352.

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

The spelling of 163841198138 in words is "one hundred sixty-three billion, eight hundred forty-one million, one hundred ninety-eight thousand, one hundred thirty-eight".