649982051 has 2 divisors, whose sum is σ = 649982052. Its totient is φ = 649982050.

The previous prime is 649982033. The next prime is 649982141. The reversal of 649982051 is 150289946.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 649982051 - 2⁶ = 649981987 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 649981993 and 649982011.

It is not a weakly prime, because it can be changed into another prime (649982251) 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, 324991025 + 324991026.

It is an arithmetic number, because the mean of its divisors is an integer number (324991026).

Almost surely, 2^649982051 is an apocalyptic number.

649982051 is a deficient number, since it is larger than the sum of its proper divisors (1).

649982051 is an equidigital number, since it uses as much as digits as its factorization.

649982051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 649982051 is about 25494.7455566829. The cubic root of 649982051 is about 866.2311318697.

The spelling of 649982051 in words is "six hundred forty-nine million, nine hundred eighty-two thousand, fifty-one".