9136638 has 60 divisors (see below), whose sum is σ = 23836032. Its totient is φ = 2608200.

The previous prime is 9136637. The next prime is 9136643. The reversal of 9136638 is 8366319.

It is a happy number.

9136638 is a `hidden beast` number, since 9 + 13 + 6 + 638 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9136637) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 7363 + ... + 8513.

Almost surely, 2^9136638 is an apocalyptic number.

9136638 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 9136638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11918016).

9136638 is an abundant number, since it is smaller than the sum of its proper divisors (14699394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9136638 is a wasteful number, since it uses less digits than its factorization.

9136638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179 (or 1163 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 9136638 is about 3022.6872150456. The cubic root of 9136638 is about 209.0557607070.

The spelling of 9136638 in words is "nine million, one hundred thirty-six thousand, six hundred thirty-eight".