18434613 has 8 divisors (see below), whose sum is σ = 26025408. Its totient is φ = 11566784.

The previous prime is 18434567. The next prime is 18434639. The reversal of 18434613 is 31643481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18434613 - 2⁸ = 18434357 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18434113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180681 + ... + 180782.

It is an arithmetic number, because the mean of its divisors is an integer number (3253176).

Almost surely, 2^18434613 is an apocalyptic number.

It is an amenable number.

18434613 is a deficient number, since it is larger than the sum of its proper divisors (7590795).

18434613 is a wasteful number, since it uses less digits than its factorization.

18434613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361483.

The product of its digits is 6912, while the sum is 30.

The square root of 18434613 is about 4293.5548208914. The cubic root of 18434613 is about 264.1666618679.

The spelling of 18434613 in words is "eighteen million, four hundred thirty-four thousand, six hundred thirteen".