1993423120 has 40 divisors (see below), whose sum is σ = 4991227416. Its totient is φ = 736032768.

The previous prime is 1993423099. The next prime is 1993423139. The reversal of 1993423120 is 213243991.

It can be written as a sum of positive squares in 4 ways, for example, as 3549456 + 1989873664 = 1884^2 + 44608^2 .

It is a tau number, because it is divible by the number of its divisors (40).

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, 957337 + ... + 959416.

Almost surely, 2^1993423120 is an apocalyptic number.

1993423120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1993423120 is an abundant number, since it is smaller than the sum of its proper divisors (2997804296).

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

1993423120 is a wasteful number, since it uses less digits than its factorization.

1993423120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1916779 (or 1916773 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 1993423120 is about 44647.7672454066. The cubic root of 1993423120 is about 1258.5384750216.

The spelling of 1993423120 in words is "one billion, nine hundred ninety-three million, four hundred twenty-three thousand, one hundred twenty".