8149481 has 2 divisors, whose sum is σ = 8149482. Its totient is φ = 8149480.

The previous prime is 8149459. The next prime is 8149483. The reversal of 8149481 is 1849418.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5290000 + 2859481 = 2300^2 + 1691^2 .

It is a cyclic number.

It is not a de Polignac number, because 8149481 - 2²² = 3955177 is a prime.

It is a super-2 number, since 2×8149481² = 132828081138722, which contains 22 as substring.

Together with 8149483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8149483) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4074740 + 4074741.

It is an arithmetic number, because the mean of its divisors is an integer number (4074741).

Almost surely, 2^8149481 is an apocalyptic number.

It is an amenable number.

8149481 is a deficient number, since it is larger than the sum of its proper divisors (1).

8149481 is an equidigital number, since it uses as much as digits as its factorization.

8149481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 35.

The square root of 8149481 is about 2854.7295843915. The cubic root of 8149481 is about 201.2379960177.

The spelling of 8149481 in words is "eight million, one hundred forty-nine thousand, four hundred eighty-one".