1928160664866 has 32 divisors (see below), whose sum is σ = 4286153956800. Its totient is φ = 642517349760.

The previous prime is 1928160664849. The next prime is 1928160664897. The reversal of 1928160664866 is 6684660618291.

1928160664866 is a `hidden beast` number, since 1 + 92 + 8 + 1 + 6 + 0 + 66 + 486 + 6 = 666.

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, 5462620 + ... + 5804871.

It is an arithmetic number, because the mean of its divisors is an integer number (133942311150).

Almost surely, 2^{1928160664866} is an apocalyptic number.

1928160664866 is an abundant number, since it is smaller than the sum of its proper divisors (2357993291934).

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

1928160664866 is a wasteful number, since it uses less digits than its factorization.

1928160664866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11270671 (or 11270665 counting only the distinct ones).

The product of its (nonzero) digits is 35831808, while the sum is 63.

The spelling of 1928160664866 in words is "one trillion, nine hundred twenty-eight billion, one hundred sixty million, six hundred sixty-four thousand, eight hundred sixty-six".