18346508924189 has 2 divisors, whose sum is σ = 18346508924190. Its totient is φ = 18346508924188.

The previous prime is 18346508924129. The next prime is 18346508924291. The reversal of 18346508924189 is 98142980564381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15988082220100 + 2358426704089 = 3998510^2 + 1535717^2 .

It is a cyclic number.

It is not a de Polignac number, because 18346508924189 - 2²⁴ = 18346492146973 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18346508924129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9173254462094 + 9173254462095.

It is an arithmetic number, because the mean of its divisors is an integer number (9173254462095).

Almost surely, 2^{18346508924189} is an apocalyptic number.

It is an amenable number.

18346508924189 is a deficient number, since it is larger than the sum of its proper divisors (1).

18346508924189 is an equidigital number, since it uses as much as digits as its factorization.

18346508924189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 119439360, while the sum is 68.

The spelling of 18346508924189 in words is "eighteen trillion, three hundred forty-six billion, five hundred eight million, nine hundred twenty-four thousand, one hundred eighty-nine".