18126307 has 2 divisors, whose sum is σ = 18126308. Its totient is φ = 18126306.

The previous prime is 18126271. The next prime is 18126319. The reversal of 18126307 is 70362181.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18126307 - 2⁷ = 18126179 is a prime.

It is a Chen prime.

It is the 4258-th Hogben number.

It is not a weakly prime, because it can be changed into another prime (18126907) by changing a digit.

It is a nontrivial repunit in base 4257.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9063153 + 9063154.

It is an arithmetic number, because the mean of its divisors is an integer number (9063154).

Almost surely, 2^18126307 is an apocalyptic number.

18126307 is a deficient number, since it is larger than the sum of its proper divisors (1).

18126307 is an equidigital number, since it uses as much as digits as its factorization.

18126307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 18126307 is about 4257.5000880799. The cubic root of 18126307 is about 262.6857074401.

Adding to 18126307 its reverse (70362181), we get a palindrome (88488488).

The spelling of 18126307 in words is "eighteen million, one hundred twenty-six thousand, three hundred seven".