18648001 has 4 divisors (see below), whose sum is σ = 18662400. Its totient is φ = 18633604.

The previous prime is 18647983. The next prime is 18648013. The reversal of 18648001 is 10084681.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18648001 - 2¹¹ = 18645953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18648061) by changing a digit.

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, 5041 + ... + 7918.

It is an arithmetic number, because the mean of its divisors is an integer number (4665600).

Almost surely, 2^18648001 is an apocalyptic number.

It is an amenable number.

18648001 is a deficient number, since it is larger than the sum of its proper divisors (14399).

18648001 is a wasteful number, since it uses less digits than its factorization.

18648001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14398.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 18648001 is about 4318.3331274926. Note that the first 3 decimals coincide. The cubic root of 18648001 is about 265.1820322822.

The spelling of 18648001 in words is "eighteen million, six hundred forty-eight thousand, one".