198646367380 has 48 divisors (see below), whose sum is σ = 429408524160. Its totient is φ = 77134785408.

The previous prime is 198646367377. The next prime is 198646367383. The reversal of 198646367380 is 83763646891.

It is an interprime number because it is at equal distance from previous prime (198646367377) and next prime (198646367383).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198646367383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19119 + ... + 630601.

It is an arithmetic number, because the mean of its divisors is an integer number (8946010920).

Almost surely, 2^198646367380 is an apocalyptic number.

198646367380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198646367380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214704262080).

198646367380 is an abundant number, since it is smaller than the sum of its proper divisors (230762156780).

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

198646367380 is a wasteful number, since it uses less digits than its factorization.

198646367380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611968 (or 611966 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 61.

The spelling of 198646367380 in words is "one hundred ninety-eight billion, six hundred forty-six million, three hundred sixty-seven thousand, three hundred eighty".