1019923361593 has 2 divisors, whose sum is σ = 1019923361594. Its totient is φ = 1019923361592.

The previous prime is 1019923361551. The next prime is 1019923361617. The reversal of 1019923361593 is 3951633299101.

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., 1008915784704 + 11007576889 = 1004448^2 + 104917^2 .

It is an emirp because it is prime and its reverse (3951633299101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1019923361593 - 2³³ = 1011333427001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1019923361593.

It is not a weakly prime, because it can be changed into another prime (1019923361533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 509961680796 + 509961680797.

It is an arithmetic number, because the mean of its divisors is an integer number (509961680797).

Almost surely, 2^{1019923361593} is an apocalyptic number.

It is an amenable number.

1019923361593 is a deficient number, since it is larger than the sum of its proper divisors (1).

1019923361593 is an equidigital number, since it uses as much as digits as its factorization.

1019923361593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1180980, while the sum is 52.

The spelling of 1019923361593 in words is "one trillion, nineteen billion, nine hundred twenty-three million, three hundred sixty-one thousand, five hundred ninety-three".