2563910985 has 8 divisors (see below), whose sum is σ = 4102257600. Its totient is φ = 1367419184.

The previous prime is 2563910953. The next prime is 2563910989. The reversal of 2563910985 is 5890193652.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2563910985 - 2⁵ = 2563910953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2563910989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85463685 + ... + 85463714.

It is an arithmetic number, because the mean of its divisors is an integer number (512782200).

Almost surely, 2^2563910985 is an apocalyptic number.

It is an amenable number.

2563910985 is a deficient number, since it is larger than the sum of its proper divisors (1538346615).

2563910985 is a wasteful number, since it uses less digits than its factorization.

2563910985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170927407.

The product of its (nonzero) digits is 583200, while the sum is 48.

The square root of 2563910985 is about 50635.0766267812. The cubic root of 2563910985 is about 1368.6770372900.

The spelling of 2563910985 in words is "two billion, five hundred sixty-three million, nine hundred ten thousand, nine hundred eighty-five".