19119963940 has 192 divisors, whose sum is σ = 52905000960. Its totient is φ = 5627381760.

The previous prime is 19119963931. The next prime is 19119963943. The reversal of 19119963940 is 4936991191.

It is not an unprimeable number, because it can be changed into a prime (19119963943) 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 63 ways as a sum of consecutive naturals, for example, 2794764 + ... + 2801596.

It is an arithmetic number, because the mean of its divisors is an integer number (275546880).

Almost surely, 2^19119963940 is an apocalyptic number.

19119963940 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 19119963940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26452500480).

19119963940 is an abundant number, since it is smaller than the sum of its proper divisors (33785037020).

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

19119963940 is a wasteful number, since it uses less digits than its factorization.

19119963940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6962 (or 6960 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 52.

The spelling of 19119963940 in words is "nineteen billion, one hundred nineteen million, nine hundred sixty-three thousand, nine hundred forty".