18442346 has 8 divisors (see below), whose sum is σ = 29791524. Its totient is φ = 8511840.

The previous prime is 18442339. The next prime is 18442367. The reversal of 18442346 is 64324481.

It can be written as a sum of positive squares in 2 ways, for example, as 18156121 + 286225 = 4261^2 + 535^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 354635 + ... + 354686.

Almost surely, 2^18442346 is an apocalyptic number.

18442346 is a deficient number, since it is larger than the sum of its proper divisors (11349178).

18442346 is a wasteful number, since it uses less digits than its factorization.

18442346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709336.

The product of its digits is 18432, while the sum is 32.

The square root of 18442346 is about 4294.4552623121. The cubic root of 18442346 is about 264.2035944798.

The spelling of 18442346 in words is "eighteen million, four hundred forty-two thousand, three hundred forty-six".