198038321802 has 24 divisors (see below), whose sum is σ = 429135069636. Its totient is φ = 66004767936.

The previous prime is 198038321801. The next prime is 198038321809. The reversal of 198038321802 is 208123830891.

It is a happy number.

198038321802 is a `hidden beast` number, since 1 + 98 + 0 + 383 + 2 + 180 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 197944018281 + 94303521 = 444909^2 + 9711^2 .

It is not an unprimeable number, because it can be changed into a prime (198038321801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 513673 + ... + 812364.

Almost surely, 2^198038321802 is an apocalyptic number.

198038321802 is an abundant number, since it is smaller than the sum of its proper divisors (231096747834).

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

198038321802 is a wasteful number, since it uses less digits than its factorization.

198038321802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334342 (or 1334339 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 198038321802 in words is "one hundred ninety-eight billion, thirty-eight million, three hundred twenty-one thousand, eight hundred two".