18480001 has 2 divisors, whose sum is σ = 18480002. Its totient is φ = 18480000.

The previous prime is 18479959. The next prime is 18480029. The reversal of 18480001 is 10008481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14070001 + 4410000 = 3751^2 + 2100^2 .

It is a cyclic number.

It is not a de Polignac number, because 18480001 - 2¹⁹ = 17955713 is a prime.

It is a super-3 number, since 3×18480001³ (a number of 23 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (18480041) 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 as a sum of consecutive naturals, namely, 9240000 + 9240001.

It is an arithmetic number, because the mean of its divisors is an integer number (9240001).

Almost surely, 2^18480001 is an apocalyptic number.

It is an amenable number.

18480001 is a deficient number, since it is larger than the sum of its proper divisors (1).

18480001 is an equidigital number, since it uses as much as digits as its factorization.

18480001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 18480001 is about 4298.8371683515. The cubic root of 18480001 is about 264.3832864257.

Adding to 18480001 its reverse (10008481), we get a palindrome (28488482).

The spelling of 18480001 in words is "eighteen million, four hundred eighty thousand, one".