919481472 has 384 divisors, whose sum is σ = 3341520000. Its totient is φ = 241145856.

The previous prime is 919481441. The next prime is 919481491. The reversal of 919481472 is 274184919.

It is a happy number.

919481472 is a `hidden beast` number, since 91 + 94 + 8 + 1 + 472 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5136679 + ... + 5136857.

It is an arithmetic number, because the mean of its divisors is an integer number (8701875).

Almost surely, 2^919481472 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 919481472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1670760000).

919481472 is an abundant number, since it is smaller than the sum of its proper divisors (2422038528).

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

919481472 is a wasteful number, since it uses less digits than its factorization.

919481472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233 (or 204 counting only the distinct ones).

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

The square root of 919481472 is about 30322.9528905085. The cubic root of 919481472 is about 972.4060692205.

The spelling of 919481472 in words is "nine hundred nineteen million, four hundred eighty-one thousand, four hundred seventy-two".