4195844618 has 24 divisors (see below), whose sum is σ = 7441352964. Its totient is φ = 1768737600.

The previous prime is 4195844617. The next prime is 4195844641. The reversal of 4195844618 is 8164485914.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3384563329 + 811281289 = 58177^2 + 28483^2 .

It is a super-2 number, since 2×4195844618² = 35210224116799131848, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4195844617) 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, 344963 + ... + 356918.

Almost surely, 2^4195844618 is an apocalyptic number.

4195844618 is a deficient number, since it is larger than the sum of its proper divisors (3245508346).

4195844618 is a wasteful number, since it uses less digits than its factorization.

4195844618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701958 (or 701951 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 50.

The square root of 4195844618 is about 64775.3395822824. The cubic root of 4195844618 is about 1612.8963742283.

The spelling of 4195844618 in words is "four billion, one hundred ninety-five million, eight hundred forty-four thousand, six hundred eighteen".