5149000921 has 2 divisors, whose sum is σ = 5149000922. Its totient is φ = 5149000920.

The previous prime is 5149000889. The next prime is 5149000957. The reversal of 5149000921 is 1290009415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3249000000 + 1900000921 = 57000^2 + 43589^2 .

It is a cyclic number.

It is not a de Polignac number, because 5149000921 - 2⁵ = 5149000889 is a prime.

It is not a weakly prime, because it can be changed into another prime (5149000121) 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, 2574500460 + 2574500461.

It is an arithmetic number, because the mean of its divisors is an integer number (2574500461).

Almost surely, 2^5149000921 is an apocalyptic number.

It is an amenable number.

5149000921 is a deficient number, since it is larger than the sum of its proper divisors (1).

5149000921 is an equidigital number, since it uses as much as digits as its factorization.

5149000921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 5149000921 is about 71756.5392211748. The cubic root of 5149000921 is about 1726.7958245083.

The spelling of 5149000921 in words is "five billion, one hundred forty-nine million, nine hundred twenty-one", and thus it is an aban number.