1912789198080 has 216 divisors, whose sum is σ = 6656312944008. Its totient is φ = 507128168448.

The previous prime is 1912789198051. The next prime is 1912789198081. The reversal of 1912789198080 is 808919872191.

1912789198080 is a `hidden beast` number, since 191 + 278 + 91 + 98 + 0 + 8 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 262160384256 + 1650628813824 = 512016^2 + 1284768^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1912789197999 and 1912789198017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1912789198081) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1513074 + ... + 2472846.

Almost surely, 2^{1912789198080} is an apocalyptic number.

1912789198080 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 1912789198080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3328156472004).

1912789198080 is an abundant number, since it is smaller than the sum of its proper divisors (4743523745928).

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

1912789198080 is a wasteful number, since it uses less digits than its factorization.

1912789198080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959973 (or 959956 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 63.

The spelling of 1912789198080 in words is "one trillion, nine hundred twelve billion, seven hundred eighty-nine million, one hundred ninety-eight thousand, eighty".