11850891 has 16 divisors (see below), whose sum is σ = 17093664. Its totient is φ = 7259904.

The previous prime is 11850877. The next prime is 11850899. The reversal of 11850891 is 19805811.

11850891 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11850891 - 2⁵ = 11850859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11850899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10255 + ... + 11351.

It is an arithmetic number, because the mean of its divisors is an integer number (1068354).

Almost surely, 2^11850891 is an apocalyptic number.

11850891 is a deficient number, since it is larger than the sum of its proper divisors (5242773).

11850891 is a wasteful number, since it uses less digits than its factorization.

11850891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390.

The product of its (nonzero) digits is 2880, while the sum is 33.

The square root of 11850891 is about 3442.5123093462. The cubic root of 11850891 is about 227.9906313479.

The spelling of 11850891 in words is "eleven million, eight hundred fifty thousand, eight hundred ninety-one".