19952560919 has 8 divisors (see below), whose sum is σ = 20001696000. Its totient is φ = 19903476600.

The previous prime is 19952560909. The next prime is 19952560921. The reversal of 19952560919 is 91906525991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19952560919 is a prime.

It is a super-2 number, since 2×19952560919² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19952560909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 844274 + ... + 867584.

It is an arithmetic number, because the mean of its divisors is an integer number (2500212000).

Almost surely, 2^19952560919 is an apocalyptic number.

19952560919 is a deficient number, since it is larger than the sum of its proper divisors (49135081).

19952560919 is a wasteful number, since it uses less digits than its factorization.

19952560919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25381.

The product of its (nonzero) digits is 1968300, while the sum is 56.

The spelling of 19952560919 in words is "nineteen billion, nine hundred fifty-two million, five hundred sixty thousand, nine hundred nineteen".