1668408610 has 32 divisors (see below), whose sum is σ = 3285505152. Its totient is φ = 604961280.

The previous prime is 1668408593. The next prime is 1668408629. The reversal of 1668408610 is 168048661.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17347 + ... + 60313.

It is an arithmetic number, because the mean of its divisors is an integer number (102672036).

Almost surely, 2^1668408610 is an apocalyptic number.

1668408610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1668408610 is a deficient number, since it is larger than the sum of its proper divisors (1617096542).

1668408610 is a wasteful number, since it uses less digits than its factorization.

1668408610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43338.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 1668408610 is about 40846.1578364477. The cubic root of 1668408610 is about 1186.0440181132.

The spelling of 1668408610 in words is "one billion, six hundred sixty-eight million, four hundred eight thousand, six hundred ten".