1668506116 has 12 divisors (see below), whose sum is σ = 2921939020. Its totient is φ = 833666400.

The previous prime is 1668506113. The next prime is 1668506131. The reversal of 1668506116 is 6116058661.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 175456516 + 1493049600 = 13246^2 + 38640^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1668506113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140235 + ... + 151666.

Almost surely, 2^1668506116 is an apocalyptic number.

It is an amenable number.

1668506116 is a deficient number, since it is larger than the sum of its proper divisors (1253432904).

1668506116 is a wasteful number, since it uses less digits than its factorization.

1668506116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293334 (or 293332 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 1668506116 is about 40847.3513951639. The cubic root of 1668506116 is about 1186.0671227960.

The spelling of 1668506116 in words is "one billion, six hundred sixty-eight million, five hundred six thousand, one hundred sixteen".