2640251382 has 8 divisors (see below), whose sum is σ = 5280502776. Its totient is φ = 880083792.

The previous prime is 2640251377. The next prime is 2640251417. The reversal of 2640251382 is 2831520462.

It is a sphenic number, since it is the product of 3 distinct primes.

2640251382 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220020943 + ... + 220020954.

It is an arithmetic number, because the mean of its divisors is an integer number (660062847).

Almost surely, 2^2640251382 is an apocalyptic number.

2640251382 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2640251382 is a wasteful number, since it uses less digits than its factorization.

2640251382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440041902.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 2640251382 is about 51383.3765141996. The cubic root of 2640251382 is about 1382.1285121860.

The spelling of 2640251382 in words is "two billion, six hundred forty million, two hundred fifty-one thousand, three hundred eighty-two".