1668351835194 has 32 divisors (see below), whose sum is σ = 3831621442560. Its totient is φ = 478952679600.

The previous prime is 1668351835127. The next prime is 1668351835223. The reversal of 1668351835194 is 4915381538661.

It is a happy number.

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, 665210802 + ... + 665213309.

It is an arithmetic number, because the mean of its divisors is an integer number (119738170080).

Almost surely, 2^{1668351835194} is an apocalyptic number.

1668351835194 is an abundant number, since it is smaller than the sum of its proper divisors (2163269607366).

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

1668351835194 is a wasteful number, since it uses less digits than its factorization.

1668351835194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330424146.

The product of its digits is 18662400, while the sum is 60.

The spelling of 1668351835194 in words is "one trillion, six hundred sixty-eight billion, three hundred fifty-one million, eight hundred thirty-five thousand, one hundred ninety-four".