8429245081 has 2 divisors, whose sum is σ = 8429245082. Its totient is φ = 8429245080.

The previous prime is 8429245079. The next prime is 8429245087. The reversal of 8429245081 is 1805429248.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8066913856 + 362331225 = 89816^2 + 19035^2 .

It is a cyclic number.

It is not a de Polignac number, because 8429245081 - 2¹ = 8429245079 is a prime.

It is a super-2 number, since 2×8429245081² (a number of 21 digits) contains 22 as substring.

Together with 8429245079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8429245087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4214622540 + 4214622541.

It is an arithmetic number, because the mean of its divisors is an integer number (4214622541).

Almost surely, 2^8429245081 is an apocalyptic number.

It is an amenable number.

8429245081 is a deficient number, since it is larger than the sum of its proper divisors (1).

8429245081 is an equidigital number, since it uses as much as digits as its factorization.

8429245081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 184320, while the sum is 43.

The square root of 8429245081 is about 91810.9202709569. The cubic root of 8429245081 is about 2035.1490758831.

The spelling of 8429245081 in words is "eight billion, four hundred twenty-nine million, two hundred forty-five thousand, eighty-one".