649468151 has 2 divisors, whose sum is σ = 649468152. Its totient is φ = 649468150.

The previous prime is 649468147. The next prime is 649468163. The reversal of 649468151 is 151864946.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 649468151 - 2² = 649468147 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (649468451) 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, 324734075 + 324734076.

It is an arithmetic number, because the mean of its divisors is an integer number (324734076).

Almost surely, 2^649468151 is an apocalyptic number.

649468151 is a deficient number, since it is larger than the sum of its proper divisors (1).

649468151 is an equidigital number, since it uses as much as digits as its factorization.

649468151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 44.

The square root of 649468151 is about 25484.6650164368. The cubic root of 649468151 is about 866.0027801542.

The spelling of 649468151 in words is "six hundred forty-nine million, four hundred sixty-eight thousand, one hundred fifty-one".