2489455123 has 2 divisors, whose sum is σ = 2489455124. Its totient is φ = 2489455122.

The previous prime is 2489455021. The next prime is 2489455141. The reversal of 2489455123 is 3215549842.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2489455123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2489455123.

It is not a weakly prime, because it can be changed into another prime (2489455523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1244727561 + 1244727562.

It is an arithmetic number, because the mean of its divisors is an integer number (1244727562).

Almost surely, 2^2489455123 is an apocalyptic number.

2489455123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2489455123 is an equidigital number, since it uses as much as digits as its factorization.

2489455123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 345600, while the sum is 43.

The square root of 2489455123 is about 49894.4398004427. The cubic root of 2489455123 is about 1355.2979057499.

The spelling of 2489455123 in words is "two billion, four hundred eighty-nine million, four hundred fifty-five thousand, one hundred twenty-three".