9011638 has 8 divisors (see below), whose sum is σ = 13953600. Its totient is φ = 4360440.

The previous prime is 9011633. The next prime is 9011659. The reversal of 9011638 is 8361109.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9011633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72613 + ... + 72736.

It is an arithmetic number, because the mean of its divisors is an integer number (1744200).

Almost surely, 2^9011638 is an apocalyptic number.

9011638 is a deficient number, since it is larger than the sum of its proper divisors (4941962).

9011638 is a wasteful number, since it uses less digits than its factorization.

9011638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145382.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 9011638 is about 3001.9390400206. The cubic root of 9011638 is about 208.0980030032.

The spelling of 9011638 in words is "nine million, eleven thousand, six hundred thirty-eight".