19489115112 has 32 divisors (see below), whose sum is σ = 51588835200. Its totient is φ = 6114232064.

The previous prime is 19489115099. The next prime is 19489115131. The reversal of 19489115112 is 21151198491.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23883312 + ... + 23884127.

It is an arithmetic number, because the mean of its divisors is an integer number (1612151100).

Almost surely, 2^19489115112 is an apocalyptic number.

19489115112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19489115112 is an abundant number, since it is smaller than the sum of its proper divisors (32099720088).

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

19489115112 is a wasteful number, since it uses less digits than its factorization.

19489115112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47767465 (or 47767461 counting only the distinct ones).

The product of its digits is 25920, while the sum is 42.

The spelling of 19489115112 in words is "nineteen billion, four hundred eighty-nine million, one hundred fifteen thousand, one hundred twelve".