19744294741 has 2 divisors, whose sum is σ = 19744294742. Its totient is φ = 19744294740.

The previous prime is 19744294607. The next prime is 19744294747. The reversal of 19744294741 is 14749244791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19678197841 + 66096900 = 140279^2 + 8130^2 .

It is an emirp because it is prime and its reverse (14749244791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19744294741 - 2¹⁵ = 19744261973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19744294747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9872147370 + 9872147371.

It is an arithmetic number, because the mean of its divisors is an integer number (9872147371).

Almost surely, 2^19744294741 is an apocalyptic number.

It is an amenable number.

19744294741 is a deficient number, since it is larger than the sum of its proper divisors (1).

19744294741 is an equidigital number, since it uses as much as digits as its factorization.

19744294741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 52.

The spelling of 19744294741 in words is "nineteen billion, seven hundred forty-four million, two hundred ninety-four thousand, seven hundred forty-one".