19625794860 has 192 divisors, whose sum is σ = 63332785152. Its totient is φ = 4448231424.

The previous prime is 19625794829. The next prime is 19625794907. The reversal of 19625794860 is 6849752691.

It is a self number, because there is not a number n which added to its sum of digits gives 19625794860.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 44301799 + ... + 44302241.

It is an arithmetic number, because the mean of its divisors is an integer number (329858256).

Almost surely, 2^19625794860 is an apocalyptic number.

19625794860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19625794860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31666392576).

19625794860 is an abundant number, since it is smaller than the sum of its proper divisors (43706990292).

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

19625794860 is a wasteful number, since it uses less digits than its factorization.

19625794860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112 (or 1110 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 57.

The spelling of 19625794860 in words is "nineteen billion, six hundred twenty-five million, seven hundred ninety-four thousand, eight hundred sixty".