2563126889 has 4 divisors (see below), whose sum is σ = 2566227024. Its totient is φ = 2560026756.

The previous prime is 2563126861. The next prime is 2563126939. The reversal of 2563126889 is 9886213652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2563126889 - 2¹⁶ = 2563061353 is a prime.

It is a super-2 number, since 2×2563126889² = 13139238898229636642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2563126859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1548827 + ... + 1550480.

It is an arithmetic number, because the mean of its divisors is an integer number (641556756).

Almost surely, 2^2563126889 is an apocalyptic number.

It is an amenable number.

2563126889 is a deficient number, since it is larger than the sum of its proper divisors (3100135).

2563126889 is an equidigital number, since it uses as much as digits as its factorization.

2563126889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3100134.

The product of its digits is 1244160, while the sum is 50.

The square root of 2563126889 is about 50627.3334178288. Note that the first 3 decimals coincide. The cubic root of 2563126889 is about 1368.5374999953.

The spelling of 2563126889 in words is "two billion, five hundred sixty-three million, one hundred twenty-six thousand, eight hundred eighty-nine".