19355922127 has 2 divisors, whose sum is σ = 19355922128. Its totient is φ = 19355922126.

The previous prime is 19355922109. The next prime is 19355922199. The reversal of 19355922127 is 72122955391.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19355922127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19355922427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9677961063 + 9677961064.

It is an arithmetic number, because the mean of its divisors is an integer number (9677961064).

Almost surely, 2^19355922127 is an apocalyptic number.

19355922127 is a deficient number, since it is larger than the sum of its proper divisors (1).

19355922127 is an equidigital number, since it uses as much as digits as its factorization.

19355922127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 340200, while the sum is 46.

The spelling of 19355922127 in words is "nineteen billion, three hundred fifty-five million, nine hundred twenty-two thousand, one hundred twenty-seven".