6829865138 has 4 divisors (see below), whose sum is σ = 10244797710. Its totient is φ = 3414932568.

The previous prime is 6829865101. The next prime is 6829865143. The reversal of 6829865138 is 8315689286.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8315689286 = 2 ⋅4157844643.

It can be written as a sum of positive squares in only one way, i.e., 5635955329 + 1193909809 = 75073^2 + 34553^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1707466283 + ... + 1707466286.

Almost surely, 2^6829865138 is an apocalyptic number.

6829865138 is a deficient number, since it is larger than the sum of its proper divisors (3414932572).

6829865138 is a wasteful number, since it uses less digits than its factorization.

6829865138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3414932571.

The product of its digits is 4976640, while the sum is 56.

The square root of 6829865138 is about 82642.9981184129. The cubic root of 6829865138 is about 1897.3059823162.

The spelling of 6829865138 in words is "six billion, eight hundred twenty-nine million, eight hundred sixty-five thousand, one hundred thirty-eight".