18448401 has 16 divisors (see below), whose sum is σ = 25417728. Its totient is φ = 11894400.

The previous prime is 18448387. The next prime is 18448403. The reversal of 18448401 is 10484481.

It is not a de Polignac number, because 18448401 - 2⁷ = 18448273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18448403) 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 15 ways as a sum of consecutive naturals, for example, 15031 + ... + 16211.

It is an arithmetic number, because the mean of its divisors is an integer number (1588608).

Almost surely, 2^18448401 is an apocalyptic number.

It is an amenable number.

18448401 is a deficient number, since it is larger than the sum of its proper divisors (6969327).

18448401 is a wasteful number, since it uses less digits than its factorization.

18448401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352.

The product of its (nonzero) digits is 4096, while the sum is 30.

The square root of 18448401 is about 4295.1601832761. The cubic root of 18448401 is about 264.2325058002.

The spelling of 18448401 in words is "eighteen million, four hundred forty-eight thousand, four hundred one".