8461538547 has 32 divisors (see below), whose sum is σ = 14446109184. Its totient is φ = 4276800000.

The previous prime is 8461538531. The next prime is 8461538587. The reversal of 8461538547 is 7458351648.

It is not a de Polignac number, because 8461538547 - 2⁴ = 8461538531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8461538547.

It is not an unprimeable number, because it can be changed into a prime (8461538587) 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 31 ways as a sum of consecutive naturals, for example, 486454 + ... + 503547.

It is an arithmetic number, because the mean of its divisors is an integer number (451440912).

Almost surely, 2^8461538547 is an apocalyptic number.

8461538547 is a deficient number, since it is larger than the sum of its proper divisors (5984570637).

8461538547 is a wasteful number, since it uses less digits than its factorization.

8461538547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990059.

The product of its digits is 3225600, while the sum is 51.

The square root of 8461538547 is about 91986.6215653124. The cubic root of 8461538547 is about 2037.7447320519.

The spelling of 8461538547 in words is "eight billion, four hundred sixty-one million, five hundred thirty-eight thousand, five hundred forty-seven".