2784989530 has 8 divisors (see below), whose sum is σ = 5012981172. Its totient is φ = 1113995808.

The previous prime is 2784989503. The next prime is 2784989531. The reversal of 2784989530 is 359894872.

It is a Cunningham number, because it is equal to 52773²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 2784989529 + 1 = 52773^2 + 1^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2784989531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139249467 + ... + 139249486.

Almost surely, 2^2784989530 is an apocalyptic number.

2784989530 is a deficient number, since it is larger than the sum of its proper divisors (2227991642).

2784989530 is a wasteful number, since it uses less digits than its factorization.

2784989530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278498960.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The square root of 2784989530 is about 52773.0000094745. Note that the first 5 decimals coincide. The cubic root of 2784989530 is about 1406.9365830381.

The spelling of 2784989530 in words is "two billion, seven hundred eighty-four million, nine hundred eighty-nine thousand, five hundred thirty".