3805542945 has 64 divisors (see below), whose sum is σ = 6882140160. Its totient is φ = 1994867136.

The previous prime is 3805542931. The next prime is 3805542967. The reversal of 3805542945 is 5492455083.

3805542945 is a `hidden beast` number, since 3 + 8 + 0 + 554 + 2 + 94 + 5 = 666.

It is not a de Polignac number, because 3805542945 - 2¹³ = 3805534753 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 3805542945.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2497954 + ... + 2499476.

It is an arithmetic number, because the mean of its divisors is an integer number (107533440).

Almost surely, 2^3805542945 is an apocalyptic number.

It is an amenable number.

3805542945 is a deficient number, since it is larger than the sum of its proper divisors (3076597215).

3805542945 is a wasteful number, since it uses less digits than its factorization.

3805542945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1843 (or 1837 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 45.

The square root of 3805542945 is about 61689.0828672302. The cubic root of 3805542945 is about 1561.2491289637.

The spelling of 3805542945 in words is "three billion, eight hundred five million, five hundred forty-two thousand, nine hundred forty-five".