18134147 has 2 divisors, whose sum is σ = 18134148. Its totient is φ = 18134146.

The previous prime is 18134131. The next prime is 18134161. The reversal of 18134147 is 74143181.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18134147 - 2⁴ = 18134131 is a prime.

It is not a weakly prime, because it can be changed into another prime (18134197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9067073 + 9067074.

It is an arithmetic number, because the mean of its divisors is an integer number (9067074).

Almost surely, 2^18134147 is an apocalyptic number.

18134147 is a deficient number, since it is larger than the sum of its proper divisors (1).

18134147 is an equidigital number, since it uses as much as digits as its factorization.

18134147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 29.

The square root of 18134147 is about 4258.4207166507. The cubic root of 18134147 is about 262.7235743021.

It can be divided in two parts, 18134 and 147, that added together give a palindrome (18281).

The spelling of 18134147 in words is "eighteen million, one hundred thirty-four thousand, one hundred forty-seven".