3681842 has 4 divisors (see below), whose sum is σ = 5522766. Its totient is φ = 1840920.

The previous prime is 3681827. The next prime is 3681871. The reversal of 3681842 is 2481863.

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., 3024121 + 657721 = 1739^2 + 811^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3681799 and 3681808.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 920459 + ... + 920462.

Almost surely, 2^3681842 is an apocalyptic number.

3681842 is a deficient number, since it is larger than the sum of its proper divisors (1840924).

3681842 is a wasteful number, since it uses less digits than its factorization.

3681842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1840923.

The product of its digits is 9216, while the sum is 32.

The square root of 3681842 is about 1918.8126537002. The cubic root of 3681842 is about 154.4146077349.

The spelling of 3681842 in words is "three million, six hundred eighty-one thousand, eight hundred forty-two".