1945898568 has 96 divisors (see below), whose sum is σ = 5329036440. Its totient is φ = 641433600.

The previous prime is 1945898531. The next prime is 1945898587. The reversal of 1945898568 is 8658985491.

1945898568 is a `hidden beast` number, since 19 + 4 + 58 + 9 + 8 + 568 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1499083524 + 446815044 = 38718^2 + 21138^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3237468 + ... + 3238068.

Almost surely, 2^1945898568 is an apocalyptic number.

1945898568 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 1945898568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2664518220).

1945898568 is an abundant number, since it is smaller than the sum of its proper divisors (3383137872).

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

1945898568 is a wasteful number, since it uses less digits than its factorization.

1945898568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039 (or 1032 counting only the distinct ones).

The product of its digits is 24883200, while the sum is 63.

The square root of 1945898568 is about 44112.3403142477. The cubic root of 1945898568 is about 1248.4564559353.

The spelling of 1945898568 in words is "one billion, nine hundred forty-five million, eight hundred ninety-eight thousand, five hundred sixty-eight".