919442478000 has 320 divisors, whose sum is σ = 3000765081600. Its totient is φ = 242179660800.

The previous prime is 919442477981. The next prime is 919442478029. The reversal of 919442478000 is 874244919.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 271300306 + ... + 271303694.

It is an arithmetic number, because the mean of its divisors is an integer number (9377390880).

Almost surely, 2^919442478000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 919442478000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1500382540800).

919442478000 is an abundant number, since it is smaller than the sum of its proper divisors (2081322603600).

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

919442478000 is a wasteful number, since it uses less digits than its factorization.

919442478000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3957 (or 3941 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 919442478000 in words is "nine hundred nineteen billion, four hundred forty-two million, four hundred seventy-eight thousand".