1968991232 has 88 divisors (see below), whose sum is σ = 4264998192. Its totient is φ = 903168000.

The previous prime is 1968991231. The next prime is 1968991249. The reversal of 1968991232 is 2321998691.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1968991231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2808482 + ... + 2809182.

Almost surely, 2^1968991232 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 1968991232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2132499096).

1968991232 is an abundant number, since it is smaller than the sum of its proper divisors (2296006960).

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

1968991232 is a wasteful number, since it uses less digits than its factorization.

1968991232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945 (or 927 counting only the distinct ones).

The product of its digits is 419904, while the sum is 50.

The square root of 1968991232 is about 44373.3166666635. The cubic root of 1968991232 is about 1253.3756718256.

The spelling of 1968991232 in words is "one billion, nine hundred sixty-eight million, nine hundred ninety-one thousand, two hundred thirty-two".