8634867481 has 2 divisors, whose sum is σ = 8634867482. Its totient is φ = 8634867480.

The previous prime is 8634867469. The next prime is 8634867497. The reversal of 8634867481 is 1847684368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5492143881 + 3142723600 = 74109^2 + 56060^2 .

It is a cyclic number.

It is not a de Polignac number, because 8634867481 - 2³³ = 44932889 is a prime.

It is a super-2 number, since 2×8634867481² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8634867581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4317433740 + 4317433741.

It is an arithmetic number, because the mean of its divisors is an integer number (4317433741).

Almost surely, 2^8634867481 is an apocalyptic number.

It is an amenable number.

8634867481 is a deficient number, since it is larger than the sum of its proper divisors (1).

8634867481 is an equidigital number, since it uses as much as digits as its factorization.

8634867481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6193152, while the sum is 55.

The square root of 8634867481 is about 92923.9876511980. The cubic root of 8634867481 is about 2051.5647368234.

The spelling of 8634867481 in words is "eight billion, six hundred thirty-four million, eight hundred sixty-seven thousand, four hundred eighty-one".