2154203568 has 60 divisors (see below), whose sum is σ = 6576853608. Its totient is φ = 652788480.

The previous prime is 2154203567. The next prime is 2154203581. The reversal of 2154203568 is 8653024512.

2154203568 is a `hidden beast` number, since 21 + 54 + 20 + 3 + 568 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2154203561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 678405 + ... + 681572.

Almost surely, 2^2154203568 is an apocalyptic number.

It is an amenable number.

2154203568 is an abundant number, since it is smaller than the sum of its proper divisors (4422650040).

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

2154203568 is a wasteful number, since it uses less digits than its factorization.

2154203568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360002 (or 1359993 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 2154203568 is about 46413.3985827369. The cubic root of 2154203568 is about 1291.5034786906.

The spelling of 2154203568 in words is "two billion, one hundred fifty-four million, two hundred three thousand, five hundred sixty-eight".