1980000168 has 32 divisors (see below), whose sum is σ = 4951195200. Its totient is φ = 659840768.

The previous prime is 1980000133. The next prime is 1980000173. The reversal of 1980000168 is 8610000891.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134080 + ... + 148112.

It is an arithmetic number, because the mean of its divisors is an integer number (154724850).

Almost surely, 2^1980000168 is an apocalyptic number.

It is an amenable number.

1980000168 is an abundant number, since it is smaller than the sum of its proper divisors (2971195032).

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

1980000168 is a wasteful number, since it uses less digits than its factorization.

1980000168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19921 (or 19917 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 1980000168 is about 44497.1928103336. The cubic root of 1980000168 is about 1255.7072711588.

The spelling of 1980000168 in words is "one billion, nine hundred eighty million, one hundred sixty-eight", and thus it is an aban number.