3918189 has 16 divisors (see below), whose sum is σ = 5855040. Its totient is φ = 2309760.

The previous prime is 3918179. The next prime is 3918193. The reversal of 3918189 is 9818193.

It is a happy number.

It is not a de Polignac number, because 3918189 - 2⁵ = 3918157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3918139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 384 + ... + 2825.

It is an arithmetic number, because the mean of its divisors is an integer number (365940).

Almost surely, 2^3918189 is an apocalyptic number.

It is an amenable number.

3918189 is a deficient number, since it is larger than the sum of its proper divisors (1936851).

3918189 is a wasteful number, since it uses less digits than its factorization.

3918189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3260.

The product of its digits is 15552, while the sum is 39.

The square root of 3918189 is about 1979.4415879232. The cubic root of 3918189 is about 157.6504181539.

The spelling of 3918189 in words is "three million, nine hundred eighteen thousand, one hundred eighty-nine".