919190216 has 96 divisors (see below), whose sum is σ = 2105352000. Its totient is φ = 374419584.

The previous prime is 919190213. The next prime is 919190243. The reversal of 919190216 is 612091919.

It is a self number, because there is not a number n which added to its sum of digits gives 919190216.

It is not an unprimeable number, because it can be changed into a prime (919190213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2425115 + ... + 2425493.

It is an arithmetic number, because the mean of its divisors is an integer number (21930750).

Almost surely, 2^919190216 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 919190216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1052676000).

919190216 is an abundant number, since it is smaller than the sum of its proper divisors (1186161784).

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

919190216 is a wasteful number, since it uses less digits than its factorization.

919190216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691 (or 680 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 38.

The square root of 919190216 is about 30318.1499435569. The cubic root of 919190216 is about 972.3033848924.

The spelling of 919190216 in words is "nine hundred nineteen million, one hundred ninety thousand, two hundred sixteen".