2497543639 has 2 divisors, whose sum is σ = 2497543640. Its totient is φ = 2497543638.

The previous prime is 2497543591. The next prime is 2497543649. The reversal of 2497543639 is 9363457942.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2497543639 - 2⁷ = 2497543511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2497543649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1248771819 + 1248771820.

It is an arithmetic number, because the mean of its divisors is an integer number (1248771820).

Almost surely, 2^2497543639 is an apocalyptic number.

2497543639 is a deficient number, since it is larger than the sum of its proper divisors (1).

2497543639 is an equidigital number, since it uses as much as digits as its factorization.

2497543639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 52.

The square root of 2497543639 is about 49975.4303533246. The cubic root of 2497543639 is about 1356.7641566642.

The spelling of 2497543639 in words is "two billion, four hundred ninety-seven million, five hundred forty-three thousand, six hundred thirty-nine".