1019944891741 has 4 divisors (see below), whose sum is σ = 1019965043484. Its totient is φ = 1019924740000.

The previous prime is 1019944891709. The next prime is 1019944891747. The reversal of 1019944891741 is 1471984499101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 125047811641 + 894897080100 = 353621^2 + 945990^2 .

It is a cyclic number.

It is not a de Polignac number, because 1019944891741 - 2⁵ = 1019944891709 is a prime.

It is a super-2 number, since 2×1019944891741² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1019944891747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9999760 + ... + 10101241.

It is an arithmetic number, because the mean of its divisors is an integer number (254991260871).

Almost surely, 2^{1019944891741} is an apocalyptic number.

It is an amenable number.

1019944891741 is a deficient number, since it is larger than the sum of its proper divisors (20151743).

1019944891741 is an equidigital number, since it uses as much as digits as its factorization.

1019944891741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20151742.

The product of its (nonzero) digits is 2612736, while the sum is 58.

The spelling of 1019944891741 in words is "one trillion, nineteen billion, nine hundred forty-four million, eight hundred ninety-one thousand, seven hundred forty-one".