18134523 has 20 divisors (see below), whose sum is σ = 29554008. Its totient is φ = 10990080.

The previous prime is 18134521. The next prime is 18134537. The reversal of 18134523 is 32543181.

It is a happy number.

18134523 is a `hidden beast` number, since 1 + 8 + 134 + 523 = 666.

It is not a de Polignac number, because 18134523 - 2¹ = 18134521 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (18134521) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9286 + ... + 11067.

Almost surely, 2^18134523 is an apocalyptic number.

18134523 is a deficient number, since it is larger than the sum of its proper divisors (11419485).

18134523 is a wasteful number, since it uses less digits than its factorization.

18134523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20376 (or 20367 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 18134523 is about 4258.4648642439. The cubic root of 18134523 is about 262.7253900916.

It can be divided in two parts, 1813 and 4523, that added together give a palindrome (6336).

The spelling of 18134523 in words is "eighteen million, one hundred thirty-four thousand, five hundred twenty-three".