1018401 has 4 divisors (see below), whose sum is σ = 1357872. Its totient is φ = 678932.

The previous prime is 1018357. The next prime is 1018411. The reversal of 1018401 is 1048101.

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 1018401 - 2⁶ = 1018337 is a prime.

It is a D-number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1018411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169731 + ... + 169736.

It is an arithmetic number, because the mean of its divisors is an integer number (339468).

2^1018401 is an apocalyptic number.

It is an amenable number.

1018401 is a deficient number, since it is larger than the sum of its proper divisors (339471).

1018401 is an equidigital number, since it uses as much as digits as its factorization.

1018401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339470.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 1018401 is about 1009.1585603858. The cubic root of 1018401 is about 100.6096424745.

The spelling of 1018401 in words is "one million, eighteen thousand, four hundred one".