649982141 has 2 divisors, whose sum is σ = 649982142. Its totient is φ = 649982140.

The previous prime is 649982051. The next prime is 649982197. The reversal of 649982141 is 141289946.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 620508100 + 29474041 = 24910^2 + 5429^2 .

It is a cyclic number.

It is not a de Polignac number, because 649982141 - 2¹⁰ = 649981117 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 649982092 and 649982101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (649982341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324991070 + 324991071.

It is an arithmetic number, because the mean of its divisors is an integer number (324991071).

Almost surely, 2^649982141 is an apocalyptic number.

It is an amenable number.

649982141 is a deficient number, since it is larger than the sum of its proper divisors (1).

649982141 is an equidigital number, since it uses as much as digits as its factorization.

649982141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 44.

The square root of 649982141 is about 25494.7473217524. The cubic root of 649982141 is about 866.2311718507.

The spelling of 649982141 in words is "six hundred forty-nine million, nine hundred eighty-two thousand, one hundred forty-one".