1928117568 has 224 divisors, whose sum is σ = 5851753600. Its totient is φ = 555393024.

The previous prime is 1928117563. The next prime is 1928117579. The reversal of 1928117568 is 8657118291.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1928117561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5169030 + ... + 5169402.

It is an arithmetic number, because the mean of its divisors is an integer number (26123900).

Almost surely, 2^1928117568 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 1928117568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2925876800).

1928117568 is an abundant number, since it is smaller than the sum of its proper divisors (3923636032).

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

1928117568 is a wasteful number, since it uses less digits than its factorization.

1928117568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529 (or 519 counting only the distinct ones).

The product of its digits is 241920, while the sum is 48.

The square root of 1928117568 is about 43910.3355487065. The cubic root of 1928117568 is about 1244.6421487290.

The spelling of 1928117568 in words is "one billion, nine hundred twenty-eight million, one hundred seventeen thousand, five hundred sixty-eight".