19172039071 has 2 divisors, whose sum is σ = 19172039072. Its totient is φ = 19172039070.

The previous prime is 19172039027. The next prime is 19172039083. The reversal of 19172039071 is 17093027191.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19172039071 - 2¹¹ = 19172037023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19172039671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9586019535 + 9586019536.

It is an arithmetic number, because the mean of its divisors is an integer number (9586019536).

Almost surely, 2^19172039071 is an apocalyptic number.

19172039071 is a deficient number, since it is larger than the sum of its proper divisors (1).

19172039071 is an equidigital number, since it uses as much as digits as its factorization.

19172039071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23814, while the sum is 40.

The spelling of 19172039071 in words is "nineteen billion, one hundred seventy-two million, thirty-nine thousand, seventy-one".