2756426389 has 2 divisors, whose sum is σ = 2756426390. Its totient is φ = 2756426388.

The previous prime is 2756426371. The next prime is 2756426401. The reversal of 2756426389 is 9836246572.

2756426389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2718788164 + 37638225 = 52142^2 + 6135^2 .

It is a cyclic number.

It is not a de Polignac number, because 2756426389 - 2⁵ = 2756426357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2756426339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1378213194 + 1378213195.

It is an arithmetic number, because the mean of its divisors is an integer number (1378213195).

Almost surely, 2^2756426389 is an apocalyptic number.

It is an amenable number.

2756426389 is a deficient number, since it is larger than the sum of its proper divisors (1).

2756426389 is an equidigital number, since it uses as much as digits as its factorization.

2756426389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4354560, while the sum is 52.

The square root of 2756426389 is about 52501.6798683623. The cubic root of 2756426389 is about 1402.1101493430.

The spelling of 2756426389 in words is "two billion, seven hundred fifty-six million, four hundred twenty-six thousand, three hundred eighty-nine".