1668351850 has 48 divisors (see below), whose sum is σ = 3442681440. Its totient is φ = 596379200.

The previous prime is 1668351847. The next prime is 1668351859. The reversal of 1668351850 is 581538661.

It is a junction number, because it is equal to n+sod(n) for n = 1668351797 and 1668351806.

It is not an unprimeable number, because it can be changed into a prime (1668351859) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6744 + ... + 58156.

It is an arithmetic number, because the mean of its divisors is an integer number (71722530).

Almost surely, 2^1668351850 is an apocalyptic number.

1668351850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1668351850 is an abundant number, since it is smaller than the sum of its proper divisors (1774329590).

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

1668351850 is a wasteful number, since it uses less digits than its factorization.

1668351850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51495 (or 51490 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 43.

The square root of 1668351850 is about 40845.4630283462. The cubic root of 1668351850 is about 1186.0305680464.

The spelling of 1668351850 in words is "one billion, six hundred sixty-eight million, three hundred fifty-one thousand, eight hundred fifty".