649150259 has 2 divisors, whose sum is σ = 649150260. Its totient is φ = 649150258.

The previous prime is 649150217. The next prime is 649150279. The reversal of 649150259 is 952051946.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-649150259 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (649150279) 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, 324575129 + 324575130.

It is an arithmetic number, because the mean of its divisors is an integer number (324575130).

Almost surely, 2^649150259 is an apocalyptic number.

649150259 is a deficient number, since it is larger than the sum of its proper divisors (1).

649150259 is an equidigital number, since it uses as much as digits as its factorization.

649150259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 649150259 is about 25478.4273258771. The cubic root of 649150259 is about 865.8614643799.

The spelling of 649150259 in words is "six hundred forty-nine million, one hundred fifty thousand, two hundred fifty-nine".