3861018 has 24 divisors (see below), whose sum is σ = 9560928. Its totient is φ = 1103112.

The previous prime is 3861017. The next prime is 3861041. The reversal of 3861018 is 8101683.

3861018 is a `hidden beast` number, since 38 + 610 + 18 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 3860982 and 3861000.

It is not an unprimeable number, because it can be changed into a prime (3861017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15196 + ... + 15447.

It is an arithmetic number, because the mean of its divisors is an integer number (398372).

Almost surely, 2^3861018 is an apocalyptic number.

3861018 is an abundant number, since it is smaller than the sum of its proper divisors (5699910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3861018 is a wasteful number, since it uses less digits than its factorization.

3861018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30658 (or 30655 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 3861018 is about 1964.9473275383. The cubic root of 3861018 is about 156.8798897435.

The spelling of 3861018 in words is "three million, eight hundred sixty-one thousand, eighteen".