11638201 has 4 divisors (see below), whose sum is σ = 11785600. Its totient is φ = 11490804.

The previous prime is 11638199. The next prime is 11638213. The reversal of 11638201 is 10283611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10283611 = 13 ⋅791047.

It is a cyclic number.

It is not a de Polignac number, because 11638201 - 2¹ = 11638199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11638261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73581 + ... + 73738.

It is an arithmetic number, because the mean of its divisors is an integer number (2946400).

Almost surely, 2^11638201 is an apocalyptic number.

It is an amenable number.

11638201 is a deficient number, since it is larger than the sum of its proper divisors (147399).

11638201 is an equidigital number, since it uses as much as digits as its factorization.

11638201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147398.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 11638201 is about 3411.4807635395. The cubic root of 11638201 is about 226.6184602886.

The spelling of 11638201 in words is "eleven million, six hundred thirty-eight thousand, two hundred one".