19930759544 has 16 divisors (see below), whose sum is σ = 37415374200. Its totient is φ = 9953326432.

The previous prime is 19930759531. The next prime is 19930759547. The reversal of 19930759544 is 44595703991.

It is a self number, because there is not a number n which added to its sum of digits gives 19930759544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19930759547) 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, 1499639 + ... + 1512870.

Almost surely, 2^19930759544 is an apocalyptic number.

It is an amenable number.

19930759544 is a deficient number, since it is larger than the sum of its proper divisors (17484614656).

19930759544 is a wasteful number, since it uses less digits than its factorization.

19930759544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3013342 (or 3013338 counting only the distinct ones).

The product of its (nonzero) digits is 6123600, while the sum is 56.

The spelling of 19930759544 in words is "nineteen billion, nine hundred thirty million, seven hundred fifty-nine thousand, five hundred forty-four".