3911618 has 4 divisors (see below), whose sum is σ = 5867430. Its totient is φ = 1955808.

The previous prime is 3911617. The next prime is 3911623. The reversal of 3911618 is 8161193.

It is a happy number.

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., 3323329 + 588289 = 1823^2 + 767^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3911617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 977903 + ... + 977906.

Almost surely, 2^3911618 is an apocalyptic number.

3911618 is a deficient number, since it is larger than the sum of its proper divisors (1955812).

3911618 is a wasteful number, since it uses less digits than its factorization.

3911618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1955811.

The product of its digits is 1296, while the sum is 29.

The square root of 3911618 is about 1977.7810798974. The cubic root of 3911618 is about 157.5622396157.

The spelling of 3911618 in words is "three million, nine hundred eleven thousand, six hundred eighteen".