11916133 has 4 divisors (see below), whose sum is σ = 12617100. Its totient is φ = 11215168.

The previous prime is 11916131. The next prime is 11916137. The reversal of 11916133 is 33161911.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33161911 = 3557 ⋅9323.

It can be written as a sum of positive squares in 2 ways, for example, as 6749604 + 5166529 = 2598^2 + 2273^2 .

It is a cyclic number.

It is not a de Polignac number, because 11916133 - 2¹ = 11916131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11916098 and 11916107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11916131) 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, 350458 + ... + 350491.

It is an arithmetic number, because the mean of its divisors is an integer number (3154275).

Almost surely, 2^11916133 is an apocalyptic number.

It is an amenable number.

11916133 is a deficient number, since it is larger than the sum of its proper divisors (700967).

11916133 is an equidigital number, since it uses as much as digits as its factorization.

11916133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700966.

The product of its digits is 486, while the sum is 25.

The square root of 11916133 is about 3451.9752316609. The cubic root of 11916133 is about 228.4082469779.

The spelling of 11916133 in words is "eleven million, nine hundred sixteen thousand, one hundred thirty-three".