2661870530 has 24 divisors (see below), whose sum is σ = 5266546236. Its totient is φ = 967952480.

The previous prime is 2661870503. The next prime is 2661870553. The reversal of 2661870530 is 350781662.

It can be written as a sum of positive squares in 2 ways, for example, as 2431771969 + 230098561 = 49313^2 + 15169^2 .

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 11 ways as a sum of consecutive naturals, for example, 1098737 + ... + 1101156.

Almost surely, 2^2661870530 is an apocalyptic number.

2661870530 is a deficient number, since it is larger than the sum of its proper divisors (2604675706).

2661870530 is a wasteful number, since it uses less digits than its factorization.

2661870530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2199922 (or 2199911 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 2661870530 is about 51593.3186565858. The cubic root of 2661870530 is about 1385.8906859280.

The spelling of 2661870530 in words is "two billion, six hundred sixty-one million, eight hundred seventy thousand, five hundred thirty".