1993856700 has 144 divisors (see below), whose sum is σ = 6327345024. Its totient is φ = 480748800.

The previous prime is 1993856651. The next prime is 1993856707. The reversal of 1993856700 is 76583991.

It is a self number, because there is not a number n which added to its sum of digits gives 1993856700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1993856707) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 648567 + ... + 651633.

It is an arithmetic number, because the mean of its divisors is an integer number (43939896).

Almost surely, 2^1993856700 is an apocalyptic number.

1993856700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1993856700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3163672512).

1993856700 is an abundant number, since it is smaller than the sum of its proper divisors (4333488324).

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

1993856700 is a wasteful number, since it uses less digits than its factorization.

1993856700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3292 (or 3285 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 48.

The square root of 1993856700 is about 44652.6225433624. The cubic root of 1993856700 is about 1258.6297146500.

The spelling of 1993856700 in words is "one billion, nine hundred ninety-three million, eight hundred fifty-six thousand, seven hundred".