1019944891747 has 2 divisors, whose sum is σ = 1019944891748. Its totient is φ = 1019944891746.

The previous prime is 1019944891709. The next prime is 1019944891759. The reversal of 1019944891747 is 7471984499101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1019944891747 - 2⁷ = 1019944891619 is a prime.

It is not a weakly prime, because it can be changed into another prime (1019944891447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 509972445873 + 509972445874.

It is an arithmetic number, because the mean of its divisors is an integer number (509972445874).

Almost surely, 2^{1019944891747} is an apocalyptic number.

1019944891747 is a deficient number, since it is larger than the sum of its proper divisors (1).

1019944891747 is an equidigital number, since it uses as much as digits as its factorization.

1019944891747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18289152, while the sum is 64.

The spelling of 1019944891747 in words is "one trillion, nineteen billion, nine hundred forty-four million, eight hundred ninety-one thousand, seven hundred forty-seven".