3689138 has 4 divisors (see below), whose sum is σ = 5533710. Its totient is φ = 1844568.

The previous prime is 3689137. The next prime is 3689141. The reversal of 3689138 is 8319863.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3411409 + 277729 = 1847^2 + 527^2 .

It is not an unprimeable number, because it can be changed into a prime (3689137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 922283 + ... + 922286.

Almost surely, 2^3689138 is an apocalyptic number.

3689138 is a deficient number, since it is larger than the sum of its proper divisors (1844572).

3689138 is a wasteful number, since it uses less digits than its factorization.

3689138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1844571.

The product of its digits is 31104, while the sum is 38.

The square root of 3689138 is about 1920.7128884870. The cubic root of 3689138 is about 154.5165372969.

The spelling of 3689138 in words is "three million, six hundred eighty-nine thousand, one hundred thirty-eight".