1993423168 has 56 divisors (see below), whose sum is σ = 4324563360. Its totient is φ = 904158720.

The previous prime is 1993423139. The next prime is 1993423183. The reversal of 1993423168 is 8613243991.

It is a happy number.

It is a congruent number.

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, 355555 + ... + 361117.

Almost surely, 2^1993423168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1993423168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2162281680).

1993423168 is an abundant number, since it is smaller than the sum of its proper divisors (2331140192).

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

1993423168 is a wasteful number, since it uses less digits than its factorization.

1993423168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6095 (or 6085 counting only the distinct ones).

The product of its digits is 279936, while the sum is 46.

The square root of 1993423168 is about 44647.7677829474. The cubic root of 1993423168 is about 1258.5384851232.

The spelling of 1993423168 in words is "one billion, nine hundred ninety-three million, four hundred twenty-three thousand, one hundred sixty-eight".