8106957945 has 12 divisors (see below), whose sum is σ = 14052060516. Its totient is φ = 4323710880.

The previous prime is 8106957941. The next prime is 8106957967. The reversal of 8106957945 is 5497596018.

8106957945 is a `hidden beast` number, since 8 + 1 + 0 + 69 + 579 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5471265024 + 2635692921 = 73968^2 + 51339^2 .

It is not a de Polignac number, because 8106957945 - 2² = 8106957941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8106957891 and 8106957900.

It is not an unprimeable number, because it can be changed into a prime (8106957941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90077266 + ... + 90077355.

It is an arithmetic number, because the mean of its divisors is an integer number (1171005043).

Almost surely, 2^8106957945 is an apocalyptic number.

It is an amenable number.

8106957945 is a deficient number, since it is larger than the sum of its proper divisors (5945102571).

8106957945 is a wasteful number, since it uses less digits than its factorization.

8106957945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180154632 (or 180154629 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 54.

The square root of 8106957945 is about 90038.6469522949. The cubic root of 8106957945 is about 2008.8737322922.

The spelling of 8106957945 in words is "eight billion, one hundred six million, nine hundred fifty-seven thousand, nine hundred forty-five".