15900591349 has 2 divisors, whose sum is σ = 15900591350. Its totient is φ = 15900591348.

The previous prime is 15900591347. The next prime is 15900591359. The reversal of 15900591349 is 94319500951.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14598680625 + 1301910724 = 120825^2 + 36082^2 .

It is a cyclic number.

It is not a de Polignac number, because 15900591349 - 2¹ = 15900591347 is a prime.

Together with 15900591347, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 15900591299 and 15900591308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15900591347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7950295674 + 7950295675.

It is an arithmetic number, because the mean of its divisors is an integer number (7950295675).

Almost surely, 2^15900591349 is an apocalyptic number.

It is an amenable number.

15900591349 is a deficient number, since it is larger than the sum of its proper divisors (1).

15900591349 is an equidigital number, since it uses as much as digits as its factorization.

15900591349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 218700, while the sum is 46.

The spelling of 15900591349 in words is "fifteen billion, nine hundred million, five hundred ninety-one thousand, three hundred forty-nine".