19740241973 has 2 divisors, whose sum is σ = 19740241974. Its totient is φ = 19740241972.

The previous prime is 19740241879. The next prime is 19740241987. The reversal of 19740241973 is 37914204791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17434033444 + 2306208529 = 132038^2 + 48023^2 .

It is a cyclic number.

It is not a de Polignac number, because 19740241973 - 2¹⁶ = 19740176437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19740241673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9870120986 + 9870120987.

It is an arithmetic number, because the mean of its divisors is an integer number (9870120987).

Almost surely, 2^19740241973 is an apocalyptic number.

It is an amenable number.

19740241973 is a deficient number, since it is larger than the sum of its proper divisors (1).

19740241973 is an equidigital number, since it uses as much as digits as its factorization.

19740241973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 47.

The spelling of 19740241973 in words is "nineteen billion, seven hundred forty million, two hundred forty-one thousand, nine hundred seventy-three".