650018944 has 16 divisors (see below), whose sum is σ = 1294959870. Its totient is φ = 325009408.

The previous prime is 650018921. The next prime is 650018951. The reversal of 650018944 is 449810056.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 649230400 + 788544 = 25480^2 + 888^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2539009 + ... + 2539264.

Almost surely, 2^650018944 is an apocalyptic number.

650018944 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

650018944 is a deficient number, since it is larger than the sum of its proper divisors (644940926).

650018944 is an equidigital number, since it uses as much as digits as its factorization.

650018944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5078287 (or 5078275 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 650018944 is about 25495.4690876634. The cubic root of 650018944 is about 866.2475206610.

The spelling of 650018944 in words is "six hundred fifty million, eighteen thousand, nine hundred forty-four".