919441872 has 120 divisors (see below), whose sum is σ = 2734467840. Its totient is φ = 287400960.

The previous prime is 919441847. The next prime is 919441883. The reversal of 919441872 is 278144919.

It is a happy number.

919441872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×919441872⁴ (a number of 37 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 927297 + ... + 928287.

It is an arithmetic number, because the mean of its divisors is an integer number (22787232).

Almost surely, 2^919441872 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 919441872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1367233920).

919441872 is an abundant number, since it is smaller than the sum of its proper divisors (1815025968).

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

919441872 is a wasteful number, since it uses less digits than its factorization.

919441872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401 (or 1392 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 919441872 is about 30322.2999127705. The cubic root of 919441872 is about 972.3921092390.

The spelling of 919441872 in words is "nine hundred nineteen million, four hundred forty-one thousand, eight hundred seventy-two".