3689812138 has 16 divisors (see below), whose sum is σ = 5852609280. Its totient is φ = 1741845600.

The previous prime is 3689812117. The next prime is 3689812163. The reversal of 3689812138 is 8312189863.

It is a super-2 number, since 2×3689812138² = 27229427227464262088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3689812091 and 3689812100.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 723228 + ... + 728311.

It is an arithmetic number, because the mean of its divisors is an integer number (365788080).

Almost surely, 2^3689812138 is an apocalyptic number.

3689812138 is a deficient number, since it is larger than the sum of its proper divisors (2162797142).

3689812138 is a wasteful number, since it uses less digits than its factorization.

3689812138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451613.

The product of its digits is 497664, while the sum is 49.

The square root of 3689812138 is about 60743.8238671225. The cubic root of 3689812138 is about 1545.2594863053.

The spelling of 3689812138 in words is "three billion, six hundred eighty-nine million, eight hundred twelve thousand, one hundred thirty-eight".