18246842 has 4 divisors (see below), whose sum is σ = 27370266. Its totient is φ = 9123420.

The previous prime is 18246827. The next prime is 18246853. The reversal of 18246842 is 24864281.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13756681 + 4490161 = 3709^2 + 2119^2 .

It is an unprimeable number.

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, 4561709 + ... + 4561712.

Almost surely, 2^18246842 is an apocalyptic number.

18246842 is a deficient number, since it is larger than the sum of its proper divisors (9123424).

18246842 is an equidigital number, since it uses as much as digits as its factorization.

18246842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9123423.

The product of its digits is 24576, while the sum is 35.

The square root of 18246842 is about 4271.6322407248. The cubic root of 18246842 is about 263.2666843380.

The spelling of 18246842 in words is "eighteen million, two hundred forty-six thousand, eight hundred forty-two".