919243628 has 12 divisors (see below), whose sum is σ = 1611755880. Its totient is φ = 458741952.

The previous prime is 919243627. The next prime is 919243673. The reversal of 919243628 is 826342919.

It is not an unprimeable number, because it can be changed into a prime (919243621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217613 + ... + 221796.

It is an arithmetic number, because the mean of its divisors is an integer number (134312990).

Almost surely, 2^919243628 is an apocalyptic number.

It is an amenable number.

919243628 is a deficient number, since it is larger than the sum of its proper divisors (692512252).

919243628 is a wasteful number, since it uses less digits than its factorization.

919243628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439936 (or 439934 counting only the distinct ones).

The product of its digits is 186624, while the sum is 44.

The square root of 919243628 is about 30319.0307892584. The cubic root of 919243628 is about 972.3222172884.

The spelling of 919243628 in words is "nine hundred nineteen million, two hundred forty-three thousand, six hundred twenty-eight".