919063644 has 24 divisors (see below), whose sum is σ = 2165304960. Its totient is φ = 303379824.

The previous prime is 919063633. The next prime is 919063657. The reversal of 919063644 is 446360919.

It is a junction number, because it is equal to n+sod(n) for n = 919063596 and 919063605.

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 7 ways as a sum of consecutive naturals, for example, 370554 + ... + 373025.

It is an arithmetic number, because the mean of its divisors is an integer number (90221040).

Almost surely, 2^919063644 is an apocalyptic number.

It is an amenable number.

919063644 is an abundant number, since it is smaller than the sum of its proper divisors (1246241316).

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

919063644 is a wasteful number, since it uses less digits than its factorization.

919063644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743689 (or 743687 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 919063644 is about 30316.0624751962. The cubic root of 919063644 is about 972.2587542921.

The spelling of 919063644 in words is "nine hundred nineteen million, sixty-three thousand, six hundred forty-four".