2543538407 has 2 divisors, whose sum is σ = 2543538408. Its totient is φ = 2543538406.

The previous prime is 2543538401. The next prime is 2543538461. The reversal of 2543538407 is 7048353452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2543538407 - 2⁴ = 2543538391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2543538401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271769203 + 1271769204.

It is an arithmetic number, because the mean of its divisors is an integer number (1271769204).

Almost surely, 2^2543538407 is an apocalyptic number.

2543538407 is a deficient number, since it is larger than the sum of its proper divisors (1).

2543538407 is an equidigital number, since it uses as much as digits as its factorization.

2543538407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 403200, while the sum is 41.

The square root of 2543538407 is about 50433.5048058332. The cubic root of 2543538407 is about 1365.0422698427.

The spelling of 2543538407 in words is "two billion, five hundred forty-three million, five hundred thirty-eight thousand, four hundred seven".