18346373 has 2 divisors, whose sum is σ = 18346374. Its totient is φ = 18346372.

The previous prime is 18346369. The next prime is 18346379. The reversal of 18346373 is 37364381.

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., 15984004 + 2362369 = 3998^2 + 1537^2 .

It is an emirp because it is prime and its reverse (37364381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18346373 - 2² = 18346369 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18346379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9173186 + 9173187.

It is an arithmetic number, because the mean of its divisors is an integer number (9173187).

Almost surely, 2^18346373 is an apocalyptic number.

It is an amenable number.

18346373 is a deficient number, since it is larger than the sum of its proper divisors (1).

18346373 is an equidigital number, since it uses as much as digits as its factorization.

18346373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 35.

The square root of 18346373 is about 4283.2666272367. The cubic root of 18346373 is about 263.7444966395.

The spelling of 18346373 in words is "eighteen million, three hundred forty-six thousand, three hundred seventy-three".