1649026529 has 2 divisors, whose sum is σ = 1649026530. Its totient is φ = 1649026528.

The previous prime is 1649026499. The next prime is 1649026531. The reversal of 1649026529 is 9256209461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1108557025 + 540469504 = 33295^2 + 23248^2 .

It is a cyclic number.

It is not a de Polignac number, because 1649026529 - 2¹² = 1649022433 is a prime.

Together with 1649026531, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1649026529.

It is not a weakly prime, because it can be changed into another prime (1649028529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 824513264 + 824513265.

It is an arithmetic number, because the mean of its divisors is an integer number (824513265).

Almost surely, 2^1649026529 is an apocalyptic number.

It is an amenable number.

1649026529 is a deficient number, since it is larger than the sum of its proper divisors (1).

1649026529 is an equidigital number, since it uses as much as digits as its factorization.

1649026529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 1649026529 is about 40608.2076555959. The cubic root of 1649026529 is about 1181.4333174097.

The spelling of 1649026529 in words is "one billion, six hundred forty-nine million, twenty-six thousand, five hundred twenty-nine".