3198540866192 has 120 divisors (see below), whose sum is σ = 7445597453496. Its totient is φ = 1326513936384.

The previous prime is 3198540866179. The next prime is 3198540866203. The reversal of 3198540866192 is 2916680458913.

It can be written as a sum of positive squares in 4 ways, for example, as 283858790656 + 2914682075536 = 532784^2 + 1707244^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2506058 + ... + 3560534.

Almost surely, 2^{3198540866192} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3198540866192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3722798726748).

3198540866192 is an abundant number, since it is smaller than the sum of its proper divisors (4247056587304).

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

3198540866192 is a wasteful number, since it uses less digits than its factorization.

3198540866192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054625 (or 1054612 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 62.

The spelling of 3198540866192 in words is "three trillion, one hundred ninety-eight billion, five hundred forty million, eight hundred sixty-six thousand, one hundred ninety-two".