2745726889 has 2 divisors, whose sum is σ = 2745726890. Its totient is φ = 2745726888.

The previous prime is 2745726779. The next prime is 2745726943. The reversal of 2745726889 is 9886275472.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2506003600 + 239723289 = 50060^2 + 15483^2 .

It is a cyclic number.

It is not a de Polignac number, because 2745726889 - 2¹¹ = 2745724841 is a prime.

It is a super-2 number, since 2×2745726889² = 15078032297955236642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2745720889) by changing a digit.

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 as a sum of consecutive naturals, namely, 1372863444 + 1372863445.

It is an arithmetic number, because the mean of its divisors is an integer number (1372863445).

Almost surely, 2^2745726889 is an apocalyptic number.

It is an amenable number.

2745726889 is a deficient number, since it is larger than the sum of its proper divisors (1).

2745726889 is an equidigital number, since it uses as much as digits as its factorization.

2745726889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13547520, while the sum is 58.

The square root of 2745726889 is about 52399.6840543910. The cubic root of 2745726889 is about 1400.2936270177.

The spelling of 2745726889 in words is "two billion, seven hundred forty-five million, seven hundred twenty-six thousand, eight hundred eighty-nine".