649381210 has 16 divisors (see below), whose sum is σ = 1182970656. Its totient is φ = 256622608.

The previous prime is 649381171. The next prime is 649381261. The reversal of 649381210 is 12183946.

649381210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390364 + ... + 392023.

It is an arithmetic number, because the mean of its divisors is an integer number (73935666).

Almost surely, 2^649381210 is an apocalyptic number.

649381210 is a deficient number, since it is larger than the sum of its proper divisors (533589446).

649381210 is a wasteful number, since it uses less digits than its factorization.

649381210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782477.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 649381210 is about 25482.9592080669. The cubic root of 649381210 is about 865.9641359664.

The spelling of 649381210 in words is "six hundred forty-nine million, three hundred eighty-one thousand, two hundred ten".