6945401791 has 2 divisors, whose sum is σ = 6945401792. Its totient is φ = 6945401790.

The previous prime is 6945401699. The next prime is 6945401803. The reversal of 6945401791 is 1971045496.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6945401791 - 2⁹ = 6945401279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6945401191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3472700895 + 3472700896.

It is an arithmetic number, because the mean of its divisors is an integer number (3472700896).

Almost surely, 2^6945401791 is an apocalyptic number.

6945401791 is a deficient number, since it is larger than the sum of its proper divisors (1).

6945401791 is an equidigital number, since it uses as much as digits as its factorization.

6945401791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 6945401791 is about 83339.0772147136. The cubic root of 6945401791 is about 1907.9447379528.

The spelling of 6945401791 in words is "six billion, nine hundred forty-five million, four hundred one thousand, seven hundred ninety-one".