18127013 has 8 divisors (see below), whose sum is σ = 18957888. Its totient is φ = 17299744.

The previous prime is 18126989. The next prime is 18127019. The reversal of 18127013 is 31072181.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18127013 - 2⁶ = 18126949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 18127013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18127019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18545 + ... + 19497.

It is an arithmetic number, because the mean of its divisors is an integer number (2369736).

Almost surely, 2^18127013 is an apocalyptic number.

It is an amenable number.

18127013 is a deficient number, since it is larger than the sum of its proper divisors (830875).

18127013 is an equidigital number, since it uses as much as digits as its factorization.

18127013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 18127013 is about 4257.5829997782. The cubic root of 18127013 is about 262.6891178370.

Adding to 18127013 its reverse (31072181), we get a palindrome (49199194).

The spelling of 18127013 in words is "eighteen million, one hundred twenty-seven thousand, thirteen".