184540674809 has 2 divisors, whose sum is σ = 184540674810. Its totient is φ = 184540674808.

The previous prime is 184540674803. The next prime is 184540674893. The reversal of 184540674809 is 908476045481.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 174998315584 + 9542359225 = 418328^2 + 97685^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-184540674809 is a prime.

It is a super-2 number, since 2×184540674809² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (184540674803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92270337404 + 92270337405.

It is an arithmetic number, because the mean of its divisors is an integer number (92270337405).

Almost surely, 2^184540674809 is an apocalyptic number.

It is an amenable number.

184540674809 is a deficient number, since it is larger than the sum of its proper divisors (1).

184540674809 is an equidigital number, since it uses as much as digits as its factorization.

184540674809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7741440, while the sum is 56.

The spelling of 184540674809 in words is "one hundred eighty-four billion, five hundred forty million, six hundred seventy-four thousand, eight hundred nine".