8523730161 has 12 divisors (see below), whose sum is σ = 12450393540. Its totient is φ = 5618638080.

The previous prime is 8523730157. The next prime is 8523730183. The reversal of 8523730161 is 1610373258.

8523730161 is a `hidden beast` number, since 8 + 523 + 73 + 0 + 1 + 61 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2034461025 + 6489269136 = 45105^2 + 80556^2 .

It is not a de Polignac number, because 8523730161 - 2² = 8523730157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8523730121) 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, 5319880 + ... + 5321481.

It is an arithmetic number, because the mean of its divisors is an integer number (1037532795).

Almost surely, 2^8523730161 is an apocalyptic number.

It is an amenable number.

8523730161 is a deficient number, since it is larger than the sum of its proper divisors (3926663379).

8523730161 is a wasteful number, since it uses less digits than its factorization.

8523730161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10641456 (or 10641453 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 8523730161 is about 92324.0497432820. The cubic root of 8523730161 is about 2042.7249693198.

The spelling of 8523730161 in words is "eight billion, five hundred twenty-three million, seven hundred thirty thousand, one hundred sixty-one".