6938662069 has 2 divisors, whose sum is σ = 6938662070. Its totient is φ = 6938662068.

The previous prime is 6938662039. The next prime is 6938662091. The reversal of 6938662069 is 9602668396.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6281355025 + 657307044 = 79255^2 + 25638^2 .

It is a cyclic number.

It is not a de Polignac number, because 6938662069 - 2¹¹ = 6938660021 is a prime.

It is a super-2 number, since 2×6938662069² = 96290062615558721522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6938662009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3469331034 + 3469331035.

It is an arithmetic number, because the mean of its divisors is an integer number (3469331035).

Almost surely, 2^6938662069 is an apocalyptic number.

It is an amenable number.

6938662069 is a deficient number, since it is larger than the sum of its proper divisors (1).

6938662069 is an equidigital number, since it uses as much as digits as its factorization.

6938662069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5038848, while the sum is 55.

The square root of 6938662069 is about 83298.6318555113. The cubic root of 6938662069 is about 1907.3273904779.

The spelling of 6938662069 in words is "six billion, nine hundred thirty-eight million, six hundred sixty-two thousand, sixty-nine".