1668085510 has 128 divisors (see below), whose sum is σ = 3948134400. Its totient is φ = 493032960.

The previous prime is 1668085501. The next prime is 1668085513. The reversal of 1668085510 is 155808661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668085513) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 817071 + ... + 819109.

It is an arithmetic number, because the mean of its divisors is an integer number (30844800).

Almost surely, 2^1668085510 is an apocalyptic number.

1668085510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1668085510 is an abundant number, since it is smaller than the sum of its proper divisors (2280048890).

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

1668085510 is a wasteful number, since it uses less digits than its factorization.

1668085510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2126.

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 1668085510 is about 40842.2025605868. The cubic root of 1668085510 is about 1185.9674510261.

The spelling of 1668085510 in words is "one billion, six hundred sixty-eight million, eighty-five thousand, five hundred ten".