19039397087 has 2 divisors, whose sum is σ = 19039397088. Its totient is φ = 19039397086.

The previous prime is 19039397081. The next prime is 19039397119. The reversal of 19039397087 is 78079393091.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19039397087 - 2⁶ = 19039397023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19039397081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9519698543 + 9519698544.

It is an arithmetic number, because the mean of its divisors is an integer number (9519698544).

Almost surely, 2^19039397087 is an apocalyptic number.

19039397087 is a deficient number, since it is larger than the sum of its proper divisors (1).

19039397087 is an equidigital number, since it uses as much as digits as its factorization.

19039397087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2571912, while the sum is 56.

The spelling of 19039397087 in words is "nineteen billion, thirty-nine million, three hundred ninety-seven thousand, eighty-seven".