8543921694 has 64 divisors (see below), whose sum is σ = 21823990272. Its totient is φ = 2165068800.

The previous prime is 8543921689. The next prime is 8543921719. The reversal of 8543921694 is 4961293458.

It is a congruent number.

It is an unprimeable number.

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, 206587 + ... + 244470.

It is an arithmetic number, because the mean of its divisors is an integer number (340999848).

Almost surely, 2^8543921694 is an apocalyptic number.

8543921694 is an abundant number, since it is smaller than the sum of its proper divisors (13280068578).

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

8543921694 is a wasteful number, since it uses less digits than its factorization.

8543921694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451121.

The product of its digits is 1866240, while the sum is 51.

The square root of 8543921694 is about 92433.3364863565. The cubic root of 8543921694 is about 2044.3366746085.

It can be divided in two parts, 854392 and 1694, that added together give a triangular number (856086 = T₁₃₀₈).

The spelling of 8543921694 in words is "eight billion, five hundred forty-three million, nine hundred twenty-one thousand, six hundred ninety-four".