11808545 has 16 divisors (see below), whose sum is σ = 16899840. Its totient is φ = 7744704.

The previous prime is 11808521. The next prime is 11808547. The reversal of 11808545 is 54580811.

It is a cyclic number.

It is not a de Polignac number, because 11808545 - 2¹⁸ = 11546401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11808547) 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 15 ways as a sum of consecutive naturals, for example, 6530 + ... + 8139.

It is an arithmetic number, because the mean of its divisors is an integer number (1056240).

Almost surely, 2^11808545 is an apocalyptic number.

It is an amenable number.

11808545 is a deficient number, since it is larger than the sum of its proper divisors (5091295).

11808545 is a wasteful number, since it uses less digits than its factorization.

11808545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14704.

The product of its (nonzero) digits is 6400, while the sum is 32.

The square root of 11808545 is about 3436.3563552111. The cubic root of 11808545 is about 227.7187526791.

The spelling of 11808545 in words is "eleven million, eight hundred eight thousand, five hundred forty-five".