1993283864 has 96 divisors (see below), whose sum is σ = 4665049200. Its totient is φ = 787015680.

The previous prime is 1993283857. The next prime is 1993283867. The reversal of 1993283864 is 4683823991.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1993283867) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 327602 + ... + 333630.

Almost surely, 2^1993283864 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 1993283864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2332524600).

1993283864 is an abundant number, since it is smaller than the sum of its proper divisors (2671765336).

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

1993283864 is a wasteful number, since it uses less digits than its factorization.

1993283864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6093 (or 6072 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 53.

The square root of 1993283864 is about 44646.2077224931. The cubic root of 1993283864 is about 1258.5091681285.

The spelling of 1993283864 in words is "one billion, nine hundred ninety-three million, two hundred eighty-three thousand, eight hundred sixty-four".