11853851 has 4 divisors (see below), whose sum is σ = 11876304. Its totient is φ = 11831400.

The previous prime is 11853847. The next prime is 11853857. The reversal of 11853851 is 15835811.

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: 15835811 = 461 ⋅34351.

It is a cyclic number.

It is not a de Polignac number, because 11853851 - 2² = 11853847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11853857) 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, 10415 + ... + 11496.

It is an arithmetic number, because the mean of its divisors is an integer number (2969076).

Almost surely, 2^11853851 is an apocalyptic number.

11853851 is a deficient number, since it is larger than the sum of its proper divisors (22453).

11853851 is an equidigital number, since it uses as much as digits as its factorization.

11853851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22452.

The product of its digits is 4800, while the sum is 32.

The square root of 11853851 is about 3442.9422010833. The cubic root of 11853851 is about 228.0096115267.

The spelling of 11853851 in words is "eleven million, eight hundred fifty-three thousand, eight hundred fifty-one".