19055748139 has 2 divisors, whose sum is σ = 19055748140. Its totient is φ = 19055748138.

The previous prime is 19055748133. The next prime is 19055748163. The reversal of 19055748139 is 93184755091.

It is a weak prime.

It is an emirp because it is prime and its reverse (93184755091) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19055748139 is a prime.

It is not a weakly prime, because it can be changed into another prime (19055748133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9527874069 + 9527874070.

It is an arithmetic number, because the mean of its divisors is an integer number (9527874070).

Almost surely, 2^19055748139 is an apocalyptic number.

19055748139 is a deficient number, since it is larger than the sum of its proper divisors (1).

19055748139 is an equidigital number, since it uses as much as digits as its factorization.

19055748139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1360800, while the sum is 52.

The spelling of 19055748139 in words is "nineteen billion, fifty-five million, seven hundred forty-eight thousand, one hundred thirty-nine".