19740241879 has 2 divisors, whose sum is σ = 19740241880. Its totient is φ = 19740241878.

The previous prime is 19740241867. The next prime is 19740241973. The reversal of 19740241879 is 97814204791.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19740241879 - 2³¹ = 17592758231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19740241379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9870120939 + 9870120940.

It is an arithmetic number, because the mean of its divisors is an integer number (9870120940).

Almost surely, 2^19740241879 is an apocalyptic number.

19740241879 is a deficient number, since it is larger than the sum of its proper divisors (1).

19740241879 is an equidigital number, since it uses as much as digits as its factorization.

19740241879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1016064, while the sum is 52.

The spelling of 19740241879 in words is "nineteen billion, seven hundred forty million, two hundred forty-one thousand, eight hundred seventy-nine".