2564641330 has 8 divisors (see below), whose sum is σ = 4616354412. Its totient is φ = 1025856528.

The previous prime is 2564641279. The next prime is 2564641351. The reversal of 2564641330 is 331464652.

It can be written as a sum of positive squares in 2 ways, for example, as 2209658049 + 354983281 = 47007^2 + 18841^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128232057 + ... + 128232076.

Almost surely, 2^2564641330 is an apocalyptic number.

2564641330 is a deficient number, since it is larger than the sum of its proper divisors (2051713082).

2564641330 is a wasteful number, since it uses less digits than its factorization.

2564641330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256464140.

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 2564641330 is about 50642.2879617420. The cubic root of 2564641330 is about 1368.8069834981.

The spelling of 2564641330 in words is "two billion, five hundred sixty-four million, six hundred forty-one thousand, three hundred thirty".