9018634 has 4 divisors (see below), whose sum is σ = 13527954. Its totient is φ = 4509316.

The previous prime is 9018629. The next prime is 9018661. The reversal of 9018634 is 4368109.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4368109 = 37 ⋅118057.

It can be written as a sum of positive squares in only one way, i.e., 9018009 + 625 = 3003^2 + 25^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 9018596 and 9018605.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2254657 + ... + 2254660.

Almost surely, 2^9018634 is an apocalyptic number.

9018634 is a deficient number, since it is larger than the sum of its proper divisors (4509320).

9018634 is a wasteful number, since it uses less digits than its factorization.

9018634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4509319.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 9018634 is about 3003.1040608011. The cubic root of 9018634 is about 208.1518399435.

The spelling of 9018634 in words is "nine million, eighteen thousand, six hundred thirty-four".