2530915681 has 32 divisors (see below), whose sum is σ = 3134799360. Its totient is φ = 1994112000.

The previous prime is 2530915633. The next prime is 2530915727. The reversal of 2530915681 is 1865190352.

It is a cyclic number.

It is not a de Polignac number, because 2530915681 - 2⁹ = 2530915169 is a prime.

It is a super-2 number, since 2×2530915681² = 12811068368663387522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2530915601) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1094955 + ... + 1097263.

It is an arithmetic number, because the mean of its divisors is an integer number (97962480).

Almost surely, 2^2530915681 is an apocalyptic number.

It is an amenable number.

2530915681 is a deficient number, since it is larger than the sum of its proper divisors (603883679).

2530915681 is a wasteful number, since it uses less digits than its factorization.

2530915681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2545.

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 2530915681 is about 50308.2068950981. The cubic root of 2530915681 is about 1362.7804421859.

The spelling of 2530915681 in words is "two billion, five hundred thirty million, nine hundred fifteen thousand, six hundred eighty-one".