18135626 has 8 divisors (see below), whose sum is σ = 27272484. Its totient is φ = 9044800.

The previous prime is 18135613. The next prime is 18135629. The reversal of 18135626 is 62653181.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16443025 + 1692601 = 4055^2 + 1301^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 18135592 and 18135601.

It is not an unprimeable number, because it can be changed into a prime (18135629) 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, 10505 + ... + 12108.

Almost surely, 2^18135626 is an apocalyptic number.

18135626 is a deficient number, since it is larger than the sum of its proper divisors (9136858).

18135626 is a wasteful number, since it uses less digits than its factorization.

18135626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23016.

The product of its digits is 8640, while the sum is 32.

The square root of 18135626 is about 4258.5943690377. The cubic root of 18135626 is about 262.7307165846.

The spelling of 18135626 in words is "eighteen million, one hundred thirty-five thousand, six hundred twenty-six".