11891873 has 8 divisors (see below), whose sum is σ = 13718592. Its totient is φ = 10097136.

The previous prime is 11891833. The next prime is 11891917. The reversal of 11891873 is 37819811.

11891873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 11891873 - 2⁸ = 11891617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11891813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7190 + ... + 8687.

It is an arithmetic number, because the mean of its divisors is an integer number (1714824).

Almost surely, 2^11891873 is an apocalyptic number.

It is an amenable number.

11891873 is a deficient number, since it is larger than the sum of its proper divisors (1826719).

11891873 is a wasteful number, since it uses less digits than its factorization.

11891873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15991.

The product of its digits is 12096, while the sum is 38.

The square root of 11891873 is about 3448.4595111441. The cubic root of 11891873 is about 228.2531365699.

The spelling of 11891873 in words is "eleven million, eight hundred ninety-one thousand, eight hundred seventy-three".