18310546819 has 2 divisors, whose sum is σ = 18310546820. Its totient is φ = 18310546818.

The previous prime is 18310546811. The next prime is 18310546883. The reversal of 18310546819 is 91864501381.

It is a weak prime.

It is an emirp because it is prime and its reverse (91864501381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18310546819 - 2³ = 18310546811 is a prime.

It is a super-2 number, since 2×18310546819² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18310546811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9155273409 + 9155273410.

It is an arithmetic number, because the mean of its divisors is an integer number (9155273410).

Almost surely, 2^18310546819 is an apocalyptic number.

18310546819 is a deficient number, since it is larger than the sum of its proper divisors (1).

18310546819 is an equidigital number, since it uses as much as digits as its factorization.

18310546819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 46.

The spelling of 18310546819 in words is "eighteen billion, three hundred ten million, five hundred forty-six thousand, eight hundred nineteen".