1668468402 has 32 divisors (see below), whose sum is σ = 3726941760. Its totient is φ = 553271040.

The previous prime is 1668468367. The next prime is 1668468427. The reversal of 1668468402 is 2048648661.

1668468402 is a `hidden beast` number, since 166 + 84 + 6 + 8 + 402 = 666.

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 15 ways as a sum of consecutive naturals, for example, 69624 + ... + 90467.

It is an arithmetic number, because the mean of its divisors is an integer number (116466930).

Almost surely, 2^1668468402 is an apocalyptic number.

1668468402 is an abundant number, since it is smaller than the sum of its proper divisors (2058473358).

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

1668468402 is a wasteful number, since it uses less digits than its factorization.

1668468402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160295 (or 160289 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The square root of 1668468402 is about 40846.8897469563. The cubic root of 1668468402 is about 1186.0581863244.

The spelling of 1668468402 in words is "one billion, six hundred sixty-eight million, four hundred sixty-eight thousand, four hundred two".