11830919 has 4 divisors (see below), whose sum is σ = 12119520. Its totient is φ = 11542320.

The previous prime is 11830913. The next prime is 11830921. The reversal of 11830919 is 91903811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91903811 = 7411 ⋅12401.

It is not a de Polignac number, because 11830919 - 2¹² = 11826823 is a prime.

It is a super-2 number, since 2×11830919² = 279941288769122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11830913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144239 + ... + 144320.

It is an arithmetic number, because the mean of its divisors is an integer number (3029880).

Almost surely, 2^11830919 is an apocalyptic number.

11830919 is a deficient number, since it is larger than the sum of its proper divisors (288601).

11830919 is an equidigital number, since it uses as much as digits as its factorization.

11830919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288600.

The product of its (nonzero) digits is 1944, while the sum is 32.

The square root of 11830919 is about 3439.6102976936. The cubic root of 11830919 is about 227.8624837621.

The spelling of 11830919 in words is "eleven million, eight hundred thirty thousand, nine hundred nineteen".