4149517481 has 2 divisors, whose sum is σ = 4149517482. Its totient is φ = 4149517480.

The previous prime is 4149517451. The next prime is 4149517487. The reversal of 4149517481 is 1847159414.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2944039081 + 1205478400 = 54259^2 + 34720^2 .

It is a cyclic number.

It is not a de Polignac number, because 4149517481 - 2¹⁸ = 4149255337 is a prime.

It is a super-2 number, since 2×4149517481² = 34436990650249170722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4149517487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2074758740 + 2074758741.

It is an arithmetic number, because the mean of its divisors is an integer number (2074758741).

Almost surely, 2^4149517481 is an apocalyptic number.

It is an amenable number.

4149517481 is a deficient number, since it is larger than the sum of its proper divisors (1).

4149517481 is an equidigital number, since it uses as much as digits as its factorization.

4149517481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 44.

The square root of 4149517481 is about 64416.7484510046. The cubic root of 4149517481 is about 1606.9382910875.

The spelling of 4149517481 in words is "four billion, one hundred forty-nine million, five hundred seventeen thousand, four hundred eighty-one".