1920941568 has 400 divisors, whose sum is σ = 7070484960. Its totient is φ = 505626624.

The previous prime is 1920941563. The next prime is 1920941569. The reversal of 1920941568 is 8651490291.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920941563) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3773698 + ... + 3774206.

Almost surely, 2^1920941568 is an apocalyptic number.

1920941568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1920941568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3535242480).

1920941568 is an abundant number, since it is smaller than the sum of its proper divisors (5149543392).

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

1920941568 is an equidigital number, since it uses as much as digits as its factorization.

1920941568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559 (or 534 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 1920941568 is about 43828.5474091944. The cubic root of 1920941568 is about 1243.0961407549.

The spelling of 1920941568 in words is "one billion, nine hundred twenty million, nine hundred forty-one thousand, five hundred sixty-eight".