1927398065441 has 2 divisors, whose sum is σ = 1927398065442. Its totient is φ = 1927398065440.

The previous prime is 1927398065387. The next prime is 1927398065519. The reversal of 1927398065441 is 1445608937291.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1447038179041 + 480359886400 = 1202929^2 + 693080^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1927398065441 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1927398065941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 963699032720 + 963699032721.

It is an arithmetic number, because the mean of its divisors is an integer number (963699032721).

It is a 2-persistent number, because it is pandigital, and so is 2⋅1927398065441 = 3854796130882, but 3⋅1927398065441 = 5782194196323 is not.

Almost surely, 2^{1927398065441} is an apocalyptic number.

It is an amenable number.

1927398065441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1927398065441 is an equidigital number, since it uses as much as digits as its factorization.

1927398065441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13063680, while the sum is 59.

The spelling of 1927398065441 in words is "one trillion, nine hundred twenty-seven billion, three hundred ninety-eight million, sixty-five thousand, four hundred forty-one".