649151653 has 2 divisors, whose sum is σ = 649151654. Its totient is φ = 649151652.

The previous prime is 649151627. The next prime is 649151719. The reversal of 649151653 is 356151946.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 337346689 + 311804964 = 18367^2 + 17658^2 .

It is a cyclic number.

It is not a de Polignac number, because 649151653 - 2²¹ = 647054501 is a prime.

It is equal to p_33751588 and since 649151653 and 33751588 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (649151603) 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, 324575826 + 324575827.

It is an arithmetic number, because the mean of its divisors is an integer number (324575827).

Almost surely, 2^649151653 is an apocalyptic number.

It is an amenable number.

649151653 is a deficient number, since it is larger than the sum of its proper divisors (1).

649151653 is an equidigital number, since it uses as much as digits as its factorization.

649151653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97200, while the sum is 40.

The square root of 649151653 is about 25478.4546823390. The cubic root of 649151653 is about 865.8620841697.

The spelling of 649151653 in words is "six hundred forty-nine million, one hundred fifty-one thousand, six hundred fifty-three".