4386818642 has 16 divisors (see below), whose sum is σ = 6778164120. Its totient is φ = 2127783168.

The previous prime is 4386818617. The next prime is 4386818651. The reversal of 4386818642 is 2468186834.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2756355001 + 1630463641 = 52501^2 + 40379^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63017 + ... + 112892.

Almost surely, 2^4386818642 is an apocalyptic number.

4386818642 is a deficient number, since it is larger than the sum of its proper divisors (2391345478).

4386818642 is a wasteful number, since it uses less digits than its factorization.

4386818642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176285.

The product of its digits is 1769472, while the sum is 50.

The square root of 4386818642 is about 66233.0630576603. The cubic root of 4386818642 is about 1637.0045761279.

The spelling of 4386818642 in words is "four billion, three hundred eighty-six million, eight hundred eighteen thousand, six hundred forty-two".