6945885539 has 2 divisors, whose sum is σ = 6945885540. Its totient is φ = 6945885538.

The previous prime is 6945885487. The next prime is 6945885547. The reversal of 6945885539 is 9355885496.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6945885539 - 2²⁸ = 6677450083 is a prime.

It is not a weakly prime, because it can be changed into another prime (6945885139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3472942769 + 3472942770.

It is an arithmetic number, because the mean of its divisors is an integer number (3472942770).

Almost surely, 2^6945885539 is an apocalyptic number.

6945885539 is a deficient number, since it is larger than the sum of its proper divisors (1).

6945885539 is an equidigital number, since it uses as much as digits as its factorization.

6945885539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656000, while the sum is 62.

The square root of 6945885539 is about 83341.9794521344. The cubic root of 6945885539 is about 1907.9890331115.

The spelling of 6945885539 in words is "six billion, nine hundred forty-five million, eight hundred eighty-five thousand, five hundred thirty-nine".