3628173818 has 8 divisors (see below), whose sum is σ = 5629924980. Its totient is φ = 1751532160.

The previous prime is 3628173817. The next prime is 3628173827. The reversal of 3628173818 is 8183718263.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3550610569 + 77563249 = 59587^2 + 8807^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (3628173811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31277303 + ... + 31277418.

Almost surely, 2^3628173818 is an apocalyptic number.

3628173818 is a deficient number, since it is larger than the sum of its proper divisors (2001751162).

3628173818 is a wasteful number, since it uses less digits than its factorization.

3628173818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62554752.

The product of its digits is 387072, while the sum is 47.

The square root of 3628173818 is about 60234.3242512108. The cubic root of 3628173818 is about 1536.6066027303.

The spelling of 3628173818 in words is "three billion, six hundred twenty-eight million, one hundred seventy-three thousand, eight hundred eighteen".