2630555813 has 4 divisors (see below), whose sum is σ = 2648210700. Its totient is φ = 2612900928.

The previous prime is 2630555791. The next prime is 2630555827. The reversal of 2630555813 is 3185550362.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 858314209 + 1772241604 = 29297^2 + 42098^2 .

It is a cyclic number.

It is not a de Polignac number, because 2630555813 - 2¹⁶ = 2630490277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2630551813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8827220 + ... + 8827517.

It is an arithmetic number, because the mean of its divisors is an integer number (662052675).

Almost surely, 2^2630555813 is an apocalyptic number.

It is an amenable number.

2630555813 is a deficient number, since it is larger than the sum of its proper divisors (17654887).

2630555813 is a wasteful number, since it uses less digits than its factorization.

2630555813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17654886.

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 2630555813 is about 51288.9443545098. The cubic root of 2630555813 is about 1380.4346129874.

The spelling of 2630555813 in words is "two billion, six hundred thirty million, five hundred fifty-five thousand, eight hundred thirteen".