1003564649 has 2 divisors, whose sum is σ = 1003564650. Its totient is φ = 1003564648.

The previous prime is 1003564637. The next prime is 1003564687. The reversal of 1003564649 is 9464653001.

It is an a-pointer prime, because the next prime (1003564687) can be obtained adding 1003564649 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 850597225 + 152967424 = 29165^2 + 12368^2 .

It is a cyclic number.

It is not a de Polignac number, because 1003564649 - 2¹⁶ = 1003499113 is a prime.

It is not a weakly prime, because it can be changed into another prime (1003564609) 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, 501782324 + 501782325.

It is an arithmetic number, because the mean of its divisors is an integer number (501782325).

Almost surely, 2^1003564649 is an apocalyptic number.

It is an amenable number.

1003564649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1003564649 is an equidigital number, since it uses as much as digits as its factorization.

1003564649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 1003564649 is about 31679.0885127713. The cubic root of 1003564649 is about 1001.1868072646.

The spelling of 1003564649 in words is "one billion, three million, five hundred sixty-four thousand, six hundred forty-nine".