11853945 has 20 divisors (see below), whose sum is σ = 21250020. Its totient is φ = 6321888.

The previous prime is 11853943. The next prime is 11853979. The reversal of 11853945 is 54935811.

11853945 is a `hidden beast` number, since 118 + 539 + 4 + 5 = 666.

11853945 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 can be written as a sum of positive squares in 2 ways, for example, as 5861241 + 5992704 = 2421^2 + 2448^2 .

It is not a de Polignac number, because 11853945 - 2¹ = 11853943 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11853943) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14230 + ... + 15039.

It is an arithmetic number, because the mean of its divisors is an integer number (1062501).

Almost surely, 2^11853945 is an apocalyptic number.

11853945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11853945 is a deficient number, since it is larger than the sum of its proper divisors (9396075).

11853945 is an equidigital number, since it uses as much as digits as its factorization.

11853945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29286 (or 29277 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 11853945 is about 3442.9558521712. The cubic root of 11853945 is about 228.0102142238.

The spelling of 11853945 in words is "eleven million, eight hundred fifty-three thousand, nine hundred forty-five".