18160001 has 4 divisors (see below), whose sum is σ = 18546432. Its totient is φ = 17773572.

The previous prime is 18159989. The next prime is 18160013. The reversal of 18160001 is 10006181.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10006181 = 89 ⋅112429.

It is an interprime number because it is at equal distance from previous prime (18159989) and next prime (18160013).

It is a cyclic number.

It is not a de Polignac number, because 18160001 - 2¹⁰ = 18158977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18160031) 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, 193145 + ... + 193238.

It is an arithmetic number, because the mean of its divisors is an integer number (4636608).

Almost surely, 2^18160001 is an apocalyptic number.

It is an amenable number.

18160001 is a deficient number, since it is larger than the sum of its proper divisors (386431).

18160001 is an equidigital number, since it uses as much as digits as its factorization.

18160001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386430.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 18160001 is about 4261.4552678633. The cubic root of 18160001 is about 262.8483707212.

Adding to 18160001 its reverse (10006181), we get a palindrome (28166182).

The spelling of 18160001 in words is "eighteen million, one hundred sixty thousand, one".