198449740800 has 1584 divisors, whose sum is σ = 820453320960. Its totient is φ = 47297986560.

The previous prime is 198449740763. The next prime is 198449740813. The reversal of 198449740800 is 8047944891.

198449740800 is a `hidden beast` number, since 198 + 4 + 49 + 7 + 408 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2718489564 + ... + 2718489636.

Almost surely, 2^198449740800 is an apocalyptic number.

198449740800 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 198449740800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (410226660480).

198449740800 is an abundant number, since it is smaller than the sum of its proper divisors (622003580160).

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

198449740800 is a wasteful number, since it uses less digits than its factorization.

198449740800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 198449740800 in words is "one hundred ninety-eight billion, four hundred forty-nine million, seven hundred forty thousand, eight hundred".