19331961968 has 40 divisors (see below), whose sum is σ = 40868674416. Its totient is φ = 8785548800.

The previous prime is 19331961967. The next prime is 19331962031. The reversal of 19331961968 is 86916913391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19331961967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1521530 + ... + 1534182.

Almost surely, 2^19331961968 is an apocalyptic number.

It is an amenable number.

19331961968 is an abundant number, since it is smaller than the sum of its proper divisors (21536712448).

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

19331961968 is a wasteful number, since it uses less digits than its factorization.

19331961968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21353 (or 21347 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 56.

The spelling of 19331961968 in words is "nineteen billion, three hundred thirty-one million, nine hundred sixty-one thousand, nine hundred sixty-eight".