8147541845 has 8 divisors (see below), whose sum is σ = 9778347864. Its totient is φ = 6517168384.

The previous prime is 8147541841. The next prime is 8147541863. The reversal of 8147541845 is 5481457418.

It can be written as a sum of positive squares in 4 ways, for example, as 528172324 + 7619369521 = 22982^2 + 87289^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8147541845 - 2² = 8147541841 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8147541845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8147541841) 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 7 ways as a sum of consecutive naturals, for example, 65144 + ... + 143313.

It is an arithmetic number, because the mean of its divisors is an integer number (1222293483).

Almost surely, 2^8147541845 is an apocalyptic number.

It is an amenable number.

8147541845 is a deficient number, since it is larger than the sum of its proper divisors (1630806019).

8147541845 is a wasteful number, since it uses less digits than its factorization.

8147541845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216279.

The product of its digits is 716800, while the sum is 47.

The square root of 8147541845 is about 90263.7349382353. The cubic root of 8147541845 is about 2012.2203333973.

The spelling of 8147541845 in words is "eight billion, one hundred forty-seven million, five hundred forty-one thousand, eight hundred forty-five".