18180675547 has 2 divisors, whose sum is σ = 18180675548. Its totient is φ = 18180675546.

The previous prime is 18180675509. The next prime is 18180675571. The reversal of 18180675547 is 74557608181.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18180675547 - 2¹¹ = 18180673499 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18180675494 and 18180675503.

It is not a weakly prime, because it can be changed into another prime (18180678547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9090337773 + 9090337774.

It is an arithmetic number, because the mean of its divisors is an integer number (9090337774).

Almost surely, 2^18180675547 is an apocalyptic number.

18180675547 is a deficient number, since it is larger than the sum of its proper divisors (1).

18180675547 is an equidigital number, since it uses as much as digits as its factorization.

18180675547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1881600, while the sum is 52.

The spelling of 18180675547 in words is "eighteen billion, one hundred eighty million, six hundred seventy-five thousand, five hundred forty-seven".