649351903 has 2 divisors, whose sum is σ = 649351904. Its totient is φ = 649351902.

The previous prime is 649351897. The next prime is 649351909. The reversal of 649351903 is 309153946.

It is a balanced prime because it is at equal distance from previous prime (649351897) and next prime (649351909).

It is a cyclic number.

It is not a de Polignac number, because 649351903 - 2²⁵ = 615797471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (649351909) 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, 324675951 + 324675952.

It is an arithmetic number, because the mean of its divisors is an integer number (324675952).

Almost surely, 2^649351903 is an apocalyptic number.

649351903 is a deficient number, since it is larger than the sum of its proper divisors (1).

649351903 is an equidigital number, since it uses as much as digits as its factorization.

649351903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87480, while the sum is 40.

The square root of 649351903 is about 25482.3841702459. The cubic root of 649351903 is about 865.9511085939.

The spelling of 649351903 in words is "six hundred forty-nine million, three hundred fifty-one thousand, nine hundred three".