1946881279782 has 64 divisors (see below), whose sum is σ = 4556203488000. Its totient is φ = 614521759104.

The previous prime is 1946881279771. The next prime is 1946881279817. The reversal of 1946881279782 is 2879721886491.

1946881279782 is a `hidden beast` number, since 1 + 9 + 468 + 8 + 12 + 79 + 7 + 82 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1946881279782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1800238 + ... + 2671070.

It is an arithmetic number, because the mean of its divisors is an integer number (71190679500).

Almost surely, 2^{1946881279782} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1946881279782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2278101744000).

1946881279782 is an abundant number, since it is smaller than the sum of its proper divisors (2609322208218).

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

1946881279782 is a wasteful number, since it uses less digits than its factorization.

1946881279782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873042 (or 873036 counting only the distinct ones).

The product of its digits is 195084288, while the sum is 72.

The spelling of 1946881279782 in words is "one trillion, nine hundred forty-six billion, eight hundred eighty-one million, two hundred seventy-nine thousand, seven hundred eighty-two".