2543172739 has 2 divisors, whose sum is σ = 2543172740. Its totient is φ = 2543172738.

The previous prime is 2543172727. The next prime is 2543172791. The reversal of 2543172739 is 9372713452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2543172739 - 2⁵ = 2543172707 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2543172695 and 2543172704.

It is not a weakly prime, because it can be changed into another prime (2543172799) 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, 1271586369 + 1271586370.

It is an arithmetic number, because the mean of its divisors is an integer number (1271586370).

Almost surely, 2^2543172739 is an apocalyptic number.

2543172739 is a deficient number, since it is larger than the sum of its proper divisors (1).

2543172739 is an equidigital number, since it uses as much as digits as its factorization.

2543172739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 43.

The square root of 2543172739 is about 50429.8794267843. The cubic root of 2543172739 is about 1364.9768522867.

The spelling of 2543172739 in words is "two billion, five hundred forty-three million, one hundred seventy-two thousand, seven hundred thirty-nine".