19638330797 has 8 divisors (see below), whose sum is σ = 19674758880. Its totient is φ = 19601928720.

The previous prime is 19638330763. The next prime is 19638330847. The reversal of 19638330797 is 79703383691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19638330797 - 2¹⁶ = 19638265261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19638330497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2101778 + ... + 2111100.

It is an arithmetic number, because the mean of its divisors is an integer number (2459344860).

Almost surely, 2^19638330797 is an apocalyptic number.

It is an amenable number.

19638330797 is a deficient number, since it is larger than the sum of its proper divisors (36428083).

19638330797 is an equidigital number, since it uses as much as digits as its factorization.

19638330797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13003.

The product of its (nonzero) digits is 5143824, while the sum is 56.

The spelling of 19638330797 in words is "nineteen billion, six hundred thirty-eight million, three hundred thirty thousand, seven hundred ninety-seven".