649198922 has 16 divisors (see below), whose sum is σ = 981268992. Its totient is φ = 322118160.

The previous prime is 649198919. The next prime is 649198933. The reversal of 649198922 is 229891946.

It is a happy number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 167903 + ... + 171725.

It is an arithmetic number, because the mean of its divisors is an integer number (61329312).

Almost surely, 2^649198922 is an apocalyptic number.

649198922 is a deficient number, since it is larger than the sum of its proper divisors (332070070).

649198922 is a wasteful number, since it uses less digits than its factorization.

649198922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4453.

The product of its digits is 559872, while the sum is 50.

The square root of 649198922 is about 25479.3822923555. The cubic root of 649198922 is about 865.8831000300.

The spelling of 649198922 in words is "six hundred forty-nine million, one hundred ninety-eight thousand, nine hundred twenty-two".