18246445 has 32 divisors (see below), whose sum is σ = 26320896. Its totient is φ = 11880000.

The previous prime is 18246443. The next prime is 18246451. The reversal of 18246445 is 54464281.

It is not a de Polignac number, because 18246445 - 2¹ = 18246443 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18246445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18246443) 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 31 ways as a sum of consecutive naturals, for example, 72570 + ... + 72820.

It is an arithmetic number, because the mean of its divisors is an integer number (822528).

Almost surely, 2^18246445 is an apocalyptic number.

It is an amenable number.

18246445 is a deficient number, since it is larger than the sum of its proper divisors (8074451).

18246445 is a wasteful number, since it uses less digits than its factorization.

18246445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361.

The product of its digits is 30720, while the sum is 34.

The square root of 18246445 is about 4271.5857711159. The cubic root of 18246445 is about 263.2647750098.

The spelling of 18246445 in words is "eighteen million, two hundred forty-six thousand, four hundred forty-five".