18343522 has 8 divisors (see below), whose sum is σ = 27603036. Its totient is φ = 9142512.

The previous prime is 18343517. The next prime is 18343529. The reversal of 18343522 is 22534381.

It can be written as a sum of positive squares in 2 ways, for example, as 17131321 + 1212201 = 4139^2 + 1101^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (18343529) 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 in 3 ways as a sum of consecutive naturals, for example, 13833 + ... + 15100.

Almost surely, 2^18343522 is an apocalyptic number.

18343522 is a deficient number, since it is larger than the sum of its proper divisors (9259514).

18343522 is a wasteful number, since it uses less digits than its factorization.

18343522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29252.

The product of its digits is 5760, while the sum is 28.

The square root of 18343522 is about 4282.9338075670. The cubic root of 18343522 is about 263.7308340932.

It can be divided in two parts, 1834 and 3522, that added together give a triangular number (5356 = T₁₀₃).

The spelling of 18343522 in words is "eighteen million, three hundred forty-three thousand, five hundred twenty-two".