18012434 has 16 divisors (see below), whose sum is σ = 29764800. Its totient is φ = 8106960.

The previous prime is 18012431. The next prime is 18012439. The reversal of 18012434 is 43421081.

It is not an unprimeable number, because it can be changed into a prime (18012431) 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, 1709 + ... + 6240.

It is an arithmetic number, because the mean of its divisors is an integer number (1860300).

Almost surely, 2^18012434 is an apocalyptic number.

18012434 is a deficient number, since it is larger than the sum of its proper divisors (11752366).

18012434 is a wasteful number, since it uses less digits than its factorization.

18012434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8065.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 18012434 is about 4244.1057950998. The cubic root of 18012434 is about 262.1344705284.

It can be divided in two parts, 180124 and 34, that multiplied together give a palindrome (6124216).

The spelling of 18012434 in words is "eighteen million, twelve thousand, four hundred thirty-four".