18134243 has 2 divisors, whose sum is σ = 18134244. Its totient is φ = 18134242.

The previous prime is 18134201. The next prime is 18134293. The reversal of 18134243 is 34243181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18134243 - 2⁸ = 18133987 is a prime.

It is a Sophie Germain prime.

It is equal to p_1159316 and since 18134243 and 1159316 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (18134293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9067121 + 9067122.

It is an arithmetic number, because the mean of its divisors is an integer number (9067122).

Almost surely, 2^18134243 is an apocalyptic number.

18134243 is a deficient number, since it is larger than the sum of its proper divisors (1).

18134243 is an equidigital number, since it uses as much as digits as its factorization.

18134243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 26.

The square root of 18134243 is about 4258.4319884202. The cubic root of 18134243 is about 262.7240379103.

The spelling of 18134243 in words is "eighteen million, one hundred thirty-four thousand, two hundred forty-three".