1782832225981 has 8 divisors (see below), whose sum is σ = 1792921350584. Its totient is φ = 1772745730560.

The previous prime is 1782832225963. The next prime is 1782832226029. The reversal of 1782832225981 is 1895222382871.

It can be written as a sum of positive squares in 4 ways, for example, as 230736100 + 1782601489881 = 15190^2 + 1335141^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1782832225981 - 2¹¹ = 1782832223933 is a prime.

It is a super-2 number, since 2×1782832225981² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1782832225081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 710761 + ... + 2017633.

It is an arithmetic number, because the mean of its divisors is an integer number (224115168823).

Almost surely, 2^{1782832225981} is an apocalyptic number.

It is an amenable number.

1782832225981 is a deficient number, since it is larger than the sum of its proper divisors (10089124603).

1782832225981 is a wasteful number, since it uses less digits than its factorization.

1782832225981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314591.

The product of its digits is 7741440, while the sum is 58.

The spelling of 1782832225981 in words is "one trillion, seven hundred eighty-two billion, eight hundred thirty-two million, two hundred twenty-five thousand, nine hundred eighty-one".