19247019742 has 16 divisors (see below), whose sum is σ = 28920838752. Its totient is φ = 9606757120.

The previous prime is 19247019683. The next prime is 19247019797. The reversal of 19247019742 is 24791074291.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 19247019692 and 19247019701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3244383 + ... + 3250309.

It is an arithmetic number, because the mean of its divisors is an integer number (1807552422).

Almost surely, 2^19247019742 is an apocalyptic number.

19247019742 is a deficient number, since it is larger than the sum of its proper divisors (9673819010).

19247019742 is a wasteful number, since it uses less digits than its factorization.

19247019742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8483.

The product of its (nonzero) digits is 254016, while the sum is 46.

It can be divided in two parts, 192470 and 19742, that added together give a palindrome (212212).

The spelling of 19247019742 in words is "nineteen billion, two hundred forty-seven million, nineteen thousand, seven hundred forty-two".