19321916416 has 44 divisors (see below), whose sum is σ = 42136348680. Its totient is φ = 8782684160.

The previous prime is 19321916413. The next prime is 19321916461. The reversal of 19321916416 is 61461912391.

It is a tau number, because it is divible by the number of its divisors (44).

It is a super-3 number, since 3×19321916416³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (19321916413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 846421 + ... + 868948.

Almost surely, 2^19321916416 is an apocalyptic number.

19321916416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19321916416 is an abundant number, since it is smaller than the sum of its proper divisors (22814432264).

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

19321916416 is a wasteful number, since it uses less digits than its factorization.

19321916416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715400 (or 1715382 counting only the distinct ones).

The product of its digits is 69984, while the sum is 43.

The spelling of 19321916416 in words is "nineteen billion, three hundred twenty-one million, nine hundred sixteen thousand, four hundred sixteen".