1865796481 has 2 divisors, whose sum is σ = 1865796482. Its totient is φ = 1865796480.

The previous prime is 1865796479. The next prime is 1865796509. The reversal of 1865796481 is 1846975681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1405050256 + 460746225 = 37484^2 + 21465^2 .

It is a cyclic number.

It is not a de Polignac number, because 1865796481 - 2¹ = 1865796479 is a prime.

It is a super-2 number, since 2×1865796481² = 6962393017023966722, which contains 22 as substring.

Together with 1865796479, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1865796421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 932898240 + 932898241.

It is an arithmetic number, because the mean of its divisors is an integer number (932898241).

Almost surely, 2^1865796481 is an apocalyptic number.

It is an amenable number.

1865796481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1865796481 is an equidigital number, since it uses as much as digits as its factorization.

1865796481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2903040, while the sum is 55.

The square root of 1865796481 is about 43194.8663732162. The cubic root of 1865796481 is about 1231.0851421384.

The spelling of 1865796481 in words is "one billion, eight hundred sixty-five million, seven hundred ninety-six thousand, four hundred eighty-one".