1644113122 has 8 divisors (see below), whose sum is σ = 2466350172. Its totient is φ = 821996400.

The previous prime is 1644113099. The next prime is 1644113131. The reversal of 1644113122 is 2213114461.

It can be written as a sum of positive squares in 2 ways, for example, as 1563490681 + 80622441 = 39541^2 + 8979^2 .

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

It is a super-3 number, since 3×1644113122³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22372 + ... + 61552.

Almost surely, 2^1644113122 is an apocalyptic number.

1644113122 is a deficient number, since it is larger than the sum of its proper divisors (822237050).

1644113122 is a wasteful number, since it uses less digits than its factorization.

1644113122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60164.

The product of its digits is 1152, while the sum is 25.

The square root of 1644113122 is about 40547.6648156216. The cubic root of 1644113122 is about 1180.2587582493.

Adding to 1644113122 its reverse (2213114461), we get a palindrome (3857227583).

The spelling of 1644113122 in words is "one billion, six hundred forty-four million, one hundred thirteen thousand, one hundred twenty-two".