18135743 has 8 divisors (see below), whose sum is σ = 18506880. Its totient is φ = 17767960.

The previous prime is 18135721. The next prime is 18135757. The reversal of 18135743 is 34753181.

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 18135743 - 2⁶ = 18135679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18135703) 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, 11996 + ... + 13422.

It is an arithmetic number, because the mean of its divisors is an integer number (2313360).

Almost surely, 2^18135743 is an apocalyptic number.

18135743 is a deficient number, since it is larger than the sum of its proper divisors (371137).

18135743 is a wasteful number, since it uses less digits than its factorization.

18135743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1677.

The product of its digits is 10080, while the sum is 32.

The square root of 18135743 is about 4258.6081059426. The cubic root of 18135743 is about 262.7312815762.

The spelling of 18135743 in words is "eighteen million, one hundred thirty-five thousand, seven hundred forty-three".