5109349621 has 2 divisors, whose sum is σ = 5109349622. Its totient is φ = 5109349620.

The previous prime is 5109349591. The next prime is 5109349633. The reversal of 5109349621 is 1269439015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3610808100 + 1498541521 = 60090^2 + 38711^2 .

It is a cyclic number.

It is not a de Polignac number, because 5109349621 - 2⁷ = 5109349493 is a prime.

It is a super-2 number, since 2×5109349621² = 52210907099225687282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5109349681) 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, 2554674810 + 2554674811.

It is an arithmetic number, because the mean of its divisors is an integer number (2554674811).

Almost surely, 2^5109349621 is an apocalyptic number.

It is an amenable number.

5109349621 is a deficient number, since it is larger than the sum of its proper divisors (1).

5109349621 is an equidigital number, since it uses as much as digits as its factorization.

5109349621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 5109349621 is about 71479.7147518091. The cubic root of 5109349621 is about 1722.3518418970.

The spelling of 5109349621 in words is "five billion, one hundred nine million, three hundred forty-nine thousand, six hundred twenty-one".