19396520944 has 40 divisors (see below), whose sum is σ = 39025502208. Its totient is φ = 9329173440.

The previous prime is 19396520939. The next prime is 19396520947. The reversal of 19396520944 is 44902569391.

It is a super-2 number, since 2×19396520944² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19396520891 and 19396520900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19396520947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34252 + ... + 199915.

Almost surely, 2^19396520944 is an apocalyptic number.

It is an amenable number.

19396520944 is an abundant number, since it is smaller than the sum of its proper divisors (19628981264).

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

19396520944 is a wasteful number, since it uses less digits than its factorization.

19396520944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234373 (or 234367 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 52.

The spelling of 19396520944 in words is "nineteen billion, three hundred ninety-six million, five hundred twenty thousand, nine hundred forty-four".