1668509046 has 12 divisors (see below), whose sum is σ = 3615102972. Its totient is φ = 556169676.

The previous prime is 1668508949. The next prime is 1668509057. The reversal of 1668509046 is 6409058661.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1668508992 and 1668509010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46347456 + ... + 46347491.

It is an arithmetic number, because the mean of its divisors is an integer number (301258581).

Almost surely, 2^1668509046 is an apocalyptic number.

1668509046 is an abundant number, since it is smaller than the sum of its proper divisors (1946593926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1668509046 is a wasteful number, since it uses less digits than its factorization.

1668509046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92694955 (or 92694952 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 1668509046 is about 40847.3872603867. The cubic root of 1668509046 is about 1186.0678170647.

The spelling of 1668509046 in words is "one billion, six hundred sixty-eight million, five hundred nine thousand, forty-six".