8429643381 has 8 divisors (see below), whose sum is σ = 11241452160. Its totient is φ = 5618798432.

The previous prime is 8429643371. The next prime is 8429643401. The reversal of 8429643381 is 1833469248.

8429643381 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 8429643381 - 2⁶ = 8429643317 is a prime.

It is a super-2 number, since 2×8429643381² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8429643381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8429643301) 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, 220296 + ... + 255713.

It is an arithmetic number, because the mean of its divisors is an integer number (1405181520).

Almost surely, 2^8429643381 is an apocalyptic number.

It is an amenable number.

8429643381 is a deficient number, since it is larger than the sum of its proper divisors (2811808779).

8429643381 is a wasteful number, since it uses less digits than its factorization.

8429643381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481915.

The product of its digits is 995328, while the sum is 48.

The square root of 8429643381 is about 91813.0893772778. The cubic root of 8429643381 is about 2035.1811304384.

The spelling of 8429643381 in words is "eight billion, four hundred twenty-nine million, six hundred forty-three thousand, three hundred eighty-one".