19475246747 has 4 divisors (see below), whose sum is σ = 21245723736. Its totient is φ = 17704769760.

The previous prime is 19475246737. The next prime is 19475246759. The reversal of 19475246747 is 74764257491.

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

It is a cyclic number.

It is not a de Polignac number, because 19475246747 - 2⁸ = 19475246491 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19475246692 and 19475246701.

It is not an unprimeable number, because it can be changed into a prime (19475246717) 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, 885238478 + ... + 885238499.

It is an arithmetic number, because the mean of its divisors is an integer number (5311430934).

Almost surely, 2^19475246747 is an apocalyptic number.

19475246747 is a deficient number, since it is larger than the sum of its proper divisors (1770476989).

19475246747 is a wasteful number, since it uses less digits than its factorization.

19475246747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770476988.

The product of its digits is 11854080, while the sum is 56.

The spelling of 19475246747 in words is "nineteen billion, four hundred seventy-five million, two hundred forty-six thousand, seven hundred forty-seven".