2545912139 has 2 divisors, whose sum is σ = 2545912140. Its totient is φ = 2545912138.

The previous prime is 2545912091. The next prime is 2545912141. The reversal of 2545912139 is 9312195452.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2545912139 is a prime.

Together with 2545912141, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2545912096 and 2545912105.

It is not a weakly prime, because it can be changed into another prime (2545912339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1272956069 + 1272956070.

It is an arithmetic number, because the mean of its divisors is an integer number (1272956070).

Almost surely, 2^2545912139 is an apocalyptic number.

2545912139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545912139 is an equidigital number, since it uses as much as digits as its factorization.

2545912139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97200, while the sum is 41.

The square root of 2545912139 is about 50457.0326020070. The cubic root of 2545912139 is about 1365.4667752031.

The spelling of 2545912139 in words is "two billion, five hundred forty-five million, nine hundred twelve thousand, one hundred thirty-nine".