17930472793 has 4 divisors (see below), whose sum is σ = 17938101888. Its totient is φ = 17922843700.

The previous prime is 17930472751. The next prime is 17930472839. The reversal of 17930472793 is 39727403971.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39727403971 = 71 ⋅559540901.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17930472793 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 17930472793.

It is not an unprimeable number, because it can be changed into a prime (17930472743) 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, 3811021 + ... + 3815722.

It is an arithmetic number, because the mean of its divisors is an integer number (4484525472).

Almost surely, 2^17930472793 is an apocalyptic number.

It is an amenable number.

17930472793 is a deficient number, since it is larger than the sum of its proper divisors (7629095).

17930472793 is an equidigital number, since it uses as much as digits as its factorization.

17930472793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7629094.

The product of its (nonzero) digits is 2000376, while the sum is 52.

The spelling of 17930472793 in words is "seventeen billion, nine hundred thirty million, four hundred seventy-two thousand, seven hundred ninety-three".