1827428835481 has 2 divisors, whose sum is σ = 1827428835482. Its totient is φ = 1827428835480.

The previous prime is 1827428835439. The next prime is 1827428835539. The reversal of 1827428835481 is 1845388247281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1826160336025 + 1268499456 = 1351355^2 + 35616^2 .

It is an emirp because it is prime and its reverse (1845388247281) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1827428835481 is a prime.

It is a super-2 number, since 2×1827428835481² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1827428835431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 913714417740 + 913714417741.

It is an arithmetic number, because the mean of its divisors is an integer number (913714417741).

Almost surely, 2^{1827428835481} is an apocalyptic number.

It is an amenable number.

1827428835481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1827428835481 is an equidigital number, since it uses as much as digits as its factorization.

1827428835481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27525120, while the sum is 61.

The spelling of 1827428835481 in words is "one trillion, eight hundred twenty-seven billion, four hundred twenty-eight million, eight hundred thirty-five thousand, four hundred eighty-one".