919420550 has 12 divisors (see below), whose sum is σ = 1710122316. Its totient is φ = 367768200.

The previous prime is 919420549. The next prime is 919420589. The reversal of 919420550 is 55024919.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 919420550.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9194156 + ... + 9194255.

It is an arithmetic number, because the mean of its divisors is an integer number (142510193).

Almost surely, 2^919420550 is an apocalyptic number.

919420550 is a deficient number, since it is larger than the sum of its proper divisors (790701766).

919420550 is a wasteful number, since it uses less digits than its factorization.

919420550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18388423 (or 18388418 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 919420550 is about 30321.9483213068. The cubic root of 919420550 is about 972.3845925395.

The spelling of 919420550 in words is "nine hundred nineteen million, four hundred twenty thousand, five hundred fifty".