1933687648 has 48 divisors (see below), whose sum is σ = 3981852000. Its totient is φ = 922622976.

The previous prime is 1933687643. The next prime is 1933687681. The reversal of 1933687648 is 8467863391.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1933687643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333478 + ... + 339226.

It is an arithmetic number, because the mean of its divisors is an integer number (82955250).

Almost surely, 2^1933687648 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 1933687648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1990926000).

1933687648 is an abundant number, since it is smaller than the sum of its proper divisors (2048164352).

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

1933687648 is a wasteful number, since it uses less digits than its factorization.

1933687648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6239 (or 6231 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 55.

The square root of 1933687648 is about 43973.7154218290. The cubic root of 1933687648 is about 1245.8395326793.

The spelling of 1933687648 in words is "one billion, nine hundred thirty-three million, six hundred eighty-seven thousand, six hundred forty-eight".