18135458 has 8 divisors (see below), whose sum is σ = 29676240. Its totient is φ = 8243380.

The previous prime is 18135457. The next prime is 18135499. The reversal of 18135458 is 85453181.

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

It is not an unprimeable number, because it can be changed into a prime (18135451) 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 3 ways as a sum of consecutive naturals, for example, 412148 + ... + 412191.

It is an arithmetic number, because the mean of its divisors is an integer number (3709530).

Almost surely, 2^18135458 is an apocalyptic number.

18135458 is a deficient number, since it is larger than the sum of its proper divisors (11540782).

18135458 is a wasteful number, since it uses less digits than its factorization.

18135458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824352.

The product of its digits is 19200, while the sum is 35.

The square root of 18135458 is about 4258.5746441738. The cubic root of 18135458 is about 262.7299053104.

The spelling of 18135458 in words is "eighteen million, one hundred thirty-five thousand, four hundred fifty-eight".