11138291 has 4 divisors (see below), whose sum is σ = 11522400. Its totient is φ = 10754184.

The previous prime is 11138287. The next prime is 11138293. The reversal of 11138291 is 19283111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19283111 = 113 ⋅170647.

It is a cyclic number.

It is not a de Polignac number, because 11138291 - 2² = 11138287 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11138291.

It is not an unprimeable number, because it can be changed into a prime (11138293) 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, 192011 + ... + 192068.

It is an arithmetic number, because the mean of its divisors is an integer number (2880600).

Almost surely, 2^11138291 is an apocalyptic number.

11138291 is a deficient number, since it is larger than the sum of its proper divisors (384109).

11138291 is an equidigital number, since it uses as much as digits as its factorization.

11138291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384108.

The product of its digits is 432, while the sum is 26.

The square root of 11138291 is about 3337.4078264426. The cubic root of 11138291 is about 223.3261196650.

The spelling of 11138291 in words is "eleven million, one hundred thirty-eight thousand, two hundred ninety-one".