18013051 has 4 divisors (see below), whose sum is σ = 20586352. Its totient is φ = 15439752.

The previous prime is 18013049. The next prime is 18013069. The reversal of 18013051 is 15031081.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18013051 - 2¹ = 18013049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18013091) 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, 1286640 + ... + 1286653.

It is an arithmetic number, because the mean of its divisors is an integer number (5146588).

Almost surely, 2^18013051 is an apocalyptic number.

18013051 is a deficient number, since it is larger than the sum of its proper divisors (2573301).

18013051 is an equidigital number, since it uses as much as digits as its factorization.

18013051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573300.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 18013051 is about 4244.1784835230. The cubic root of 18013051 is about 262.1374635558.

It can be divided in two parts, 180 and 13051, that added together give a palindrome (13231).

The spelling of 18013051 in words is "eighteen million, thirteen thousand, fifty-one".