1643160492019 has 2 divisors, whose sum is σ = 1643160492020. Its totient is φ = 1643160492018.

The previous prime is 1643160491969. The next prime is 1643160492037. The reversal of 1643160492019 is 9102940613461.

It is a strong prime.

It is an emirp because it is prime and its reverse (9102940613461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1643160492019 - 2⁹ = 1643160491507 is a prime.

It is a super-2 number, since 2×1643160492019² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1643160492019.

It is not a weakly prime, because it can be changed into another prime (1643160492319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 821580246009 + 821580246010.

It is an arithmetic number, because the mean of its divisors is an integer number (821580246010).

Almost surely, 2^{1643160492019} is an apocalyptic number.

1643160492019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1643160492019 is an equidigital number, since it uses as much as digits as its factorization.

1643160492019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 46.

The spelling of 1643160492019 in words is "one trillion, six hundred forty-three billion, one hundred sixty million, four hundred ninety-two thousand, nineteen".