2758955813 has 2 divisors, whose sum is σ = 2758955814. Its totient is φ = 2758955812.

The previous prime is 2758955807. The next prime is 2758955821. The reversal of 2758955813 is 3185598572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2578913089 + 180042724 = 50783^2 + 13418^2 .

It is a cyclic number.

It is not a de Polignac number, because 2758955813 - 2⁸ = 2758955557 is a prime.

It is a super-2 number, since 2×2758955813² = 15223674356172981938, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2758955833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1379477906 + 1379477907.

It is an arithmetic number, because the mean of its divisors is an integer number (1379477907).

Almost surely, 2^2758955813 is an apocalyptic number.

It is an amenable number.

2758955813 is a deficient number, since it is larger than the sum of its proper divisors (1).

2758955813 is an equidigital number, since it uses as much as digits as its factorization.

2758955813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024000, while the sum is 53.

The square root of 2758955813 is about 52525.7633262002. The cubic root of 2758955813 is about 1402.5388985391.

The spelling of 2758955813 in words is "two billion, seven hundred fifty-eight million, nine hundred fifty-five thousand, eight hundred thirteen".