19118867460 has 192 divisors, whose sum is σ = 68895719424. Its totient is φ = 3844569600.

The previous prime is 19118867447. The next prime is 19118867543. The reversal of 19118867460 is 6476881191.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 76474 + ... + 209966.

It is an arithmetic number, because the mean of its divisors is an integer number (358831872).

Almost surely, 2^19118867460 is an apocalyptic number.

19118867460 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 19118867460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34447859712).

19118867460 is an abundant number, since it is smaller than the sum of its proper divisors (49776851964).

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

19118867460 is a wasteful number, since it uses less digits than its factorization.

19118867460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133554 (or 133552 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 51.

The spelling of 19118867460 in words is "nineteen billion, one hundred eighteen million, eight hundred sixty-seven thousand, four hundred sixty".