15349720349 has 2 divisors, whose sum is σ = 15349720350. Its totient is φ = 15349720348.

The previous prime is 15349720297. The next prime is 15349720357. The reversal of 15349720349 is 94302794351.

It is a happy number.

15349720349 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9278505625 + 6071214724 = 96325^2 + 77918^2 .

It is a cyclic number.

It is not a de Polignac number, because 15349720349 - 2¹² = 15349716253 is a prime.

It is a super-2 number, since 2×15349720349² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15349720049) 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, 7674860174 + 7674860175.

It is an arithmetic number, because the mean of its divisors is an integer number (7674860175).

Almost surely, 2^15349720349 is an apocalyptic number.

It is an amenable number.

15349720349 is a deficient number, since it is larger than the sum of its proper divisors (1).

15349720349 is an equidigital number, since it uses as much as digits as its factorization.

15349720349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 47.

The spelling of 15349720349 in words is "fifteen billion, three hundred forty-nine million, seven hundred twenty thousand, three hundred forty-nine".