1840666215041 has 2 divisors, whose sum is σ = 1840666215042. Its totient is φ = 1840666215040.

The previous prime is 1840666214977. The next prime is 1840666215043. The reversal of 1840666215041 is 1405126660481.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1165838467600 + 674827747441 = 1079740^2 + 821479^2 .

It is a cyclic number.

It is not a de Polignac number, because 1840666215041 - 2⁶ = 1840666214977 is a prime.

Together with 1840666215043, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1840666214983 and 1840666215001.

It is not a weakly prime, because it can be changed into another prime (1840666215043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 920333107520 + 920333107521.

It is an arithmetic number, because the mean of its divisors is an integer number (920333107521).

Almost surely, 2^{1840666215041} is an apocalyptic number.

It is an amenable number.

1840666215041 is a deficient number, since it is larger than the sum of its proper divisors (1).

1840666215041 is an equidigital number, since it uses as much as digits as its factorization.

1840666215041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 1840666215041 in words is "one trillion, eight hundred forty billion, six hundred sixty-six million, two hundred fifteen thousand, forty-one".