19018675847 has 2 divisors, whose sum is σ = 19018675848. Its totient is φ = 19018675846.

The previous prime is 19018675799. The next prime is 19018675849. The reversal of 19018675847 is 74857681091.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (74857681091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19018675847 - 2²⁰ = 19017627271 is a prime.

It is a super-2 number, since 2×19018675847² (a number of 21 digits) contains 22 as substring.

Together with 19018675849, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 19018675792 and 19018675801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19018675849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9509337923 + 9509337924.

It is an arithmetic number, because the mean of its divisors is an integer number (9509337924).

Almost surely, 2^19018675847 is an apocalyptic number.

19018675847 is a deficient number, since it is larger than the sum of its proper divisors (1).

19018675847 is an equidigital number, since it uses as much as digits as its factorization.

19018675847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3386880, while the sum is 56.

The spelling of 19018675847 in words is "nineteen billion, eighteen million, six hundred seventy-five thousand, eight hundred forty-seven".