2539752493 has 2 divisors, whose sum is σ = 2539752494. Its totient is φ = 2539752492.

The previous prime is 2539752377. The next prime is 2539752497. The reversal of 2539752493 is 3942579352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1705524804 + 834227689 = 41298^2 + 28883^2 .

It is a cyclic number.

It is not a de Polignac number, because 2539752493 - 2¹⁷ = 2539621421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2539752497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1269876246 + 1269876247.

It is an arithmetic number, because the mean of its divisors is an integer number (1269876247).

Almost surely, 2^2539752493 is an apocalyptic number.

It is an amenable number.

2539752493 is a deficient number, since it is larger than the sum of its proper divisors (1).

2539752493 is an equidigital number, since it uses as much as digits as its factorization.

2539752493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2041200, while the sum is 49.

The square root of 2539752493 is about 50395.9571096730. The cubic root of 2539752493 is about 1364.3646706359.

The spelling of 2539752493 in words is "two billion, five hundred thirty-nine million, seven hundred fifty-two thousand, four hundred ninety-three".