19450191120 has 160 divisors (see below), whose sum is σ = 63171194880. Its totient is φ = 4944360960.

The previous prime is 19450191107. The next prime is 19450191169. The reversal of 19450191120 is 2119105491.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 478971 + ... + 517989.

It is an arithmetic number, because the mean of its divisors is an integer number (394819968).

Almost surely, 2^19450191120 is an apocalyptic number.

19450191120 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 19450191120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31585597440).

19450191120 is an abundant number, since it is smaller than the sum of its proper divisors (43721003760).

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

19450191120 is a wasteful number, since it uses less digits than its factorization.

19450191120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39133 (or 39127 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 33.

The spelling of 19450191120 in words is "nineteen billion, four hundred fifty million, one hundred ninety-one thousand, one hundred twenty".