19389076009 has 2 divisors, whose sum is σ = 19389076010. Its totient is φ = 19389076008.

The previous prime is 19389075989. The next prime is 19389076073. The reversal of 19389076009 is 90067098391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15277701609 + 4111374400 = 123603^2 + 64120^2 .

It is a cyclic number.

It is not a de Polignac number, because 19389076009 - 2¹⁷ = 19388944937 is a prime.

It is not a weakly prime, because it can be changed into another prime (19389077009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9694538004 + 9694538005.

It is an arithmetic number, because the mean of its divisors is an integer number (9694538005).

Almost surely, 2^19389076009 is an apocalyptic number.

It is an amenable number.

19389076009 is a deficient number, since it is larger than the sum of its proper divisors (1).

19389076009 is an equidigital number, since it uses as much as digits as its factorization.

19389076009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 734832, while the sum is 52.

The spelling of 19389076009 in words is "nineteen billion, three hundred eighty-nine million, seventy-six thousand, nine".