3243557407 has 2 divisors, whose sum is σ = 3243557408. Its totient is φ = 3243557406.

The previous prime is 3243557341. The next prime is 3243557411. The reversal of 3243557407 is 7047553423.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3243557407 - 2²⁷ = 3109339679 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3243557407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3243557417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1621778703 + 1621778704.

It is an arithmetic number, because the mean of its divisors is an integer number (1621778704).

Almost surely, 2^3243557407 is an apocalyptic number.

3243557407 is a deficient number, since it is larger than the sum of its proper divisors (1).

3243557407 is an equidigital number, since it uses as much as digits as its factorization.

3243557407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 352800, while the sum is 40.

The square root of 3243557407 is about 56952.2379454925. The cubic root of 3243557407 is about 1480.2686094823.

The spelling of 3243557407 in words is "three billion, two hundred forty-three million, five hundred fifty-seven thousand, four hundred seven".