19893056344 has 16 divisors (see below), whose sum is σ = 42627978000. Its totient is φ = 8525595552.

The previous prime is 19893056341. The next prime is 19893056371. The reversal of 19893056344 is 44365039891.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 19893056291 and 19893056300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19893056341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177616519 + ... + 177616630.

It is an arithmetic number, because the mean of its divisors is an integer number (2664248625).

Almost surely, 2^19893056344 is an apocalyptic number.

19893056344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

19893056344 is an abundant number, since it is smaller than the sum of its proper divisors (22734921656).

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

19893056344 is a wasteful number, since it uses less digits than its factorization.

19893056344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355233162 (or 355233158 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 52.

The spelling of 19893056344 in words is "nineteen billion, eight hundred ninety-three million, fifty-six thousand, three hundred forty-four".