1728854381376 has 84 divisors (see below), whose sum is σ = 4955635332804. Its totient is φ = 576263116800.

The previous prime is 1728854381357. The next prime is 1728854381383. The reversal of 1728854381376 is 6731834588271.

It is a happy number.

1728854381376 is a `hidden beast` number, since 1 + 7 + 2 + 8 + 8 + 543 + 8 + 13 + 76 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1032337281600 + 696517099776 = 1016040^2 + 834576^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24641386 + ... + 24711446.

Almost surely, 2^{1728854381376} is an apocalyptic number.

1728854381376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1728854381376 is an abundant number, since it is smaller than the sum of its proper divisors (3226780951428).

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

1728854381376 is a wasteful number, since it uses less digits than its factorization.

1728854381376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112920 (or 112907 counting only the distinct ones).

The product of its digits is 54190080, while the sum is 63.

The spelling of 1728854381376 in words is "one trillion, seven hundred twenty-eight billion, eight hundred fifty-four million, three hundred eighty-one thousand, three hundred seventy-six".