18023401 has 8 divisors (see below), whose sum is σ = 19846944. Its totient is φ = 16230720.

The previous prime is 18023393. The next prime is 18023429. The reversal of 18023401 is 10432081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18023401 - 2³ = 18023393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18023441) 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 7 ways as a sum of consecutive naturals, for example, 6480 + ... + 8833.

It is an arithmetic number, because the mean of its divisors is an integer number (2480868).

Almost surely, 2^18023401 is an apocalyptic number.

18023401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18023401 is a deficient number, since it is larger than the sum of its proper divisors (1823543).

18023401 is a wasteful number, since it uses less digits than its factorization.

18023401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15431.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 18023401 is about 4245.3976256648. The cubic root of 18023401 is about 262.1876605541.

Adding to 18023401 its reverse (10432081), we get a palindrome (28455482).

The spelling of 18023401 in words is "eighteen million, twenty-three thousand, four hundred one".