3198493961856 has 448 divisors, whose sum is σ = 9882832550400. Its totient is φ = 1029574748160.

The previous prime is 3198493961791. The next prime is 3198493961869. The reversal of 3198493961856 is 6581693948913.

3198493961856 is a `hidden beast` number, since 3 + 19 + 8 + 49 + 396 + 185 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 1871557930 + ... + 1871559638.

Almost surely, 2^{3198493961856} is an apocalyptic number.

3198493961856 is a gapful number since it is divisible by the number (36) 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 3198493961856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4941416275200).

3198493961856 is an abundant number, since it is smaller than the sum of its proper divisors (6684338588544).

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

3198493961856 is an equidigital number, since it uses as much as digits as its factorization.

3198493961856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2419 (or 2392 counting only the distinct ones).

The product of its digits is 302330880, while the sum is 72.

The spelling of 3198493961856 in words is "three trillion, one hundred ninety-eight billion, four hundred ninety-three million, nine hundred sixty-one thousand, eight hundred fifty-six".