2381540256 has 72 divisors (see below), whose sum is σ = 7128969120. Its totient is φ = 752063616.

The previous prime is 2381540209. The next prime is 2381540263. The reversal of 2381540256 is 6520451832.

2381540256 is a `hidden beast` number, since 238 + 15 + 402 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is a self number, because there is not a number n which added to its sum of digits gives 2381540256.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 212140 + ... + 223083.

It is an arithmetic number, because the mean of its divisors is an integer number (99013460).

Almost surely, 2^2381540256 is an apocalyptic number.

It is an amenable number.

2381540256 is an abundant number, since it is smaller than the sum of its proper divisors (4747428864).

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

2381540256 is a wasteful number, since it uses less digits than its factorization.

2381540256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435258 (or 435247 counting only the distinct ones).

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

The square root of 2381540256 is about 48801.0272023038. The cubic root of 2381540256 is about 1335.4244057367.

The spelling of 2381540256 in words is "two billion, three hundred eighty-one million, five hundred forty thousand, two hundred fifty-six".