649558118 has 8 divisors (see below), whose sum is σ = 1062913320. Its totient is φ = 295253680.

The previous prime is 649558109. The next prime is 649558163. The reversal of 649558118 is 811855946.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 14762663 + ... + 14762706.

It is an arithmetic number, because the mean of its divisors is an integer number (132864165).

Almost surely, 2^649558118 is an apocalyptic number.

649558118 is a deficient number, since it is larger than the sum of its proper divisors (413355202).

649558118 is a wasteful number, since it uses less digits than its factorization.

649558118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29525382.

The product of its digits is 345600, while the sum is 47.

The square root of 649558118 is about 25486.4300756304. The cubic root of 649558118 is about 866.0427657304.

The spelling of 649558118 in words is "six hundred forty-nine million, five hundred fifty-eight thousand, one hundred eighteen".