18645122 has 8 divisors (see below), whose sum is σ = 28074816. Its totient is φ = 9286852.

The previous prime is 18645103. The next prime is 18645127. The reversal of 18645122 is 22154681.

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 (18645127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17198 + ... + 18249.

It is an arithmetic number, because the mean of its divisors is an integer number (3509352).

Almost surely, 2^18645122 is an apocalyptic number.

18645122 is a deficient number, since it is larger than the sum of its proper divisors (9429694).

18645122 is a wasteful number, since it uses less digits than its factorization.

18645122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35712.

The product of its digits is 3840, while the sum is 29.

The square root of 18645122 is about 4317.9997684113. Note that the first 3 decimals coincide. The cubic root of 18645122 is about 265.1683847360.

The spelling of 18645122 in words is "eighteen million, six hundred forty-five thousand, one hundred twenty-two".