1668701870 has 16 divisors (see below), whose sum is σ = 3276723888. Its totient is φ = 606800640.

The previous prime is 1668701843. The next prime is 1668701891. The reversal of 1668701870 is 781078661.

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 7 ways as a sum of consecutive naturals, for example, 7584899 + ... + 7585118.

It is an arithmetic number, because the mean of its divisors is an integer number (204795243).

Almost surely, 2^1668701870 is an apocalyptic number.

1668701870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1668701870 is a deficient number, since it is larger than the sum of its proper divisors (1608022018).

1668701870 is a wasteful number, since it uses less digits than its factorization.

1668701870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15170035.

The product of its (nonzero) digits is 112896, while the sum is 44.

The square root of 1668701870 is about 40849.7474900396. The cubic root of 1668701870 is about 1186.1135052660.

The spelling of 1668701870 in words is "one billion, six hundred sixty-eight million, seven hundred one thousand, eight hundred seventy".