6947309851 has 2 divisors, whose sum is σ = 6947309852. Its totient is φ = 6947309850.

The previous prime is 6947309833. The next prime is 6947309869. The reversal of 6947309851 is 1589037496.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (6947309833) and next prime (6947309869).

It is a cyclic number.

It is not a de Polignac number, because 6947309851 - 2⁵ = 6947309819 is a prime.

It is a super-2 number, since 2×6947309851² = 96530228331603284402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6947309251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3473654925 + 3473654926.

It is an arithmetic number, because the mean of its divisors is an integer number (3473654926).

Almost surely, 2^6947309851 is an apocalyptic number.

6947309851 is the 52716-th centered pentagonal number.

6947309851 is a deficient number, since it is larger than the sum of its proper divisors (1).

6947309851 is an equidigital number, since it uses as much as digits as its factorization.

6947309851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The square root of 6947309851 is about 83350.5239995526. The cubic root of 6947309851 is about 1908.1194405749.

The spelling of 6947309851 in words is "six billion, nine hundred forty-seven million, three hundred nine thousand, eight hundred fifty-one".