8481857387 has 2 divisors, whose sum is σ = 8481857388. Its totient is φ = 8481857386.

The previous prime is 8481857369. The next prime is 8481857437. The reversal of 8481857387 is 7837581848.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8481857387 - 2⁶ = 8481857323 is a prime.

It is not a weakly prime, because it can be changed into another prime (8481857327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4240928693 + 4240928694.

It is an arithmetic number, because the mean of its divisors is an integer number (4240928694).

Almost surely, 2^8481857387 is an apocalyptic number.

8481857387 is a deficient number, since it is larger than the sum of its proper divisors (1).

8481857387 is an equidigital number, since it uses as much as digits as its factorization.

8481857387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12042240, while the sum is 59.

The square root of 8481857387 is about 92096.9998805607. Note that the first 3 decimals coincide. The cubic root of 8481857387 is about 2039.3745188499.

The spelling of 8481857387 in words is "eight billion, four hundred eighty-one million, eight hundred fifty-seven thousand, three hundred eighty-seven".