8641545738 has 32 divisors (see below), whose sum is σ = 19902896640. Its totient is φ = 2450164080.

The previous prime is 8641545733. The next prime is 8641545739. The reversal of 8641545738 is 8375451468.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8641545733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 779808 + ... + 790811.

It is an arithmetic number, because the mean of its divisors is an integer number (621965520).

Almost surely, 2^8641545738 is an apocalyptic number.

8641545738 is an abundant number, since it is smaller than the sum of its proper divisors (11261350902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8641545738 is a wasteful number, since it uses less digits than its factorization.

8641545738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570762.

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

The square root of 8641545738 is about 92959.9146836958. The cubic root of 8641545738 is about 2052.0934979190.

The spelling of 8641545738 in words is "eight billion, six hundred forty-one million, five hundred forty-five thousand, seven hundred thirty-eight".