2745263881 has 2 divisors, whose sum is σ = 2745263882. Its totient is φ = 2745263880.

The previous prime is 2745263879. The next prime is 2745263897. The reversal of 2745263881 is 1883625472.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2263856400 + 481407481 = 47580^2 + 21941^2 .

It is a cyclic number.

It is not a de Polignac number, because 2745263881 - 2¹ = 2745263879 is a prime.

It is a super-2 number, since 2×2745263881² = 15072947552646364322, which contains 22 as substring.

Together with 2745263879, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2745263681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1372631940 + 1372631941.

It is an arithmetic number, because the mean of its divisors is an integer number (1372631941).

Almost surely, 2^2745263881 is an apocalyptic number.

It is an amenable number.

2745263881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2745263881 is an equidigital number, since it uses as much as digits as its factorization.

2745263881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 645120, while the sum is 46.

The square root of 2745263881 is about 52395.2658262175. The cubic root of 2745263881 is about 1400.2149127555.

The spelling of 2745263881 in words is "two billion, seven hundred forty-five million, two hundred sixty-three thousand, eight hundred eighty-one".