2653638877 has 2 divisors, whose sum is σ = 2653638878. Its totient is φ = 2653638876.

The previous prime is 2653638829. The next prime is 2653638887. The reversal of 2653638877 is 7788363562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2631792601 + 21846276 = 51301^2 + 4674^2 .

It is a cyclic number.

It is not a de Polignac number, because 2653638877 - 2¹¹ = 2653636829 is a prime.

It is a super-2 number, since 2×2653638877² = 14083598579051642258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2653638887) 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, 1326819438 + 1326819439.

It is an arithmetic number, because the mean of its divisors is an integer number (1326819439).

Almost surely, 2^2653638877 is an apocalyptic number.

It is an amenable number.

2653638877 is a deficient number, since it is larger than the sum of its proper divisors (1).

2653638877 is an equidigital number, since it uses as much as digits as its factorization.

2653638877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10160640, while the sum is 55.

The square root of 2653638877 is about 51513.4824778912. The cubic root of 2653638877 is about 1384.4606199897.

It can be divided in two parts, 26 and 53638877, that added together give a triangular number (53638903 = T₁₀₃₅₇).

The spelling of 2653638877 in words is "two billion, six hundred fifty-three million, six hundred thirty-eight thousand, eight hundred seventy-seven".