2564971870 has 8 divisors (see below), whose sum is σ = 4616949384. Its totient is φ = 1025988744.

The previous prime is 2564971847. The next prime is 2564971889. The reversal of 2564971870 is 781794652.

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

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 128248584 + ... + 128248603.

It is an arithmetic number, because the mean of its divisors is an integer number (577118673).

Almost surely, 2^2564971870 is an apocalyptic number.

2564971870 is a deficient number, since it is larger than the sum of its proper divisors (2051977514).

2564971870 is a wasteful number, since it uses less digits than its factorization.

2564971870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256497194.

The product of its (nonzero) digits is 846720, while the sum is 49.

The square root of 2564971870 is about 50645.5513347421. The cubic root of 2564971870 is about 1368.8657865256.

The spelling of 2564971870 in words is "two billion, five hundred sixty-four million, nine hundred seventy-one thousand, eight hundred seventy".