649105318 has 16 divisors (see below), whose sum is σ = 1019375280. Its totient is φ = 309583456.

The previous prime is 649105267. The next prime is 649105321. The reversal of 649105318 is 813501946.

649105318 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×649105318² = 842675427711762248, which contains 22 as substring.

It is a congruent number.

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, 62605 + ... + 72232.

It is an arithmetic number, because the mean of its divisors is an integer number (63710955).

Almost surely, 2^649105318 is an apocalyptic number.

649105318 is a deficient number, since it is larger than the sum of its proper divisors (370269962).

649105318 is a wasteful number, since it uses less digits than its factorization.

649105318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134951.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 649105318 is about 25477.5453684220. The cubic root of 649105318 is about 865.8414825768.

The spelling of 649105318 in words is "six hundred forty-nine million, one hundred five thousand, three hundred eighteen".