2530494981 has 12 divisors (see below), whose sum is σ = 4177325152. Its totient is φ = 1445997096.

The previous prime is 2530494979. The next prime is 2530495007. The reversal of 2530494981 is 1894940352.

It is not a de Polignac number, because 2530494981 - 2¹ = 2530494979 is a prime.

It is a super-2 number, since 2×2530494981² = 12806809697732380722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2530494971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20083231 + ... + 20083356.

Almost surely, 2^2530494981 is an apocalyptic number.

2530494981 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2530494981 is a deficient number, since it is larger than the sum of its proper divisors (1646830171).

2530494981 is a wasteful number, since it uses less digits than its factorization.

2530494981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40166600 (or 40166597 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 2530494981 is about 50304.0254949840. The cubic root of 2530494981 is about 1362.7049288706.

The spelling of 2530494981 in words is "two billion, five hundred thirty million, four hundred ninety-four thousand, nine hundred eighty-one".