4121813853 has 6 divisors (see below), whose sum is σ = 5953731134. Its totient is φ = 2747875896.

The previous prime is 4121813851. The next prime is 4121813911. The reversal of 4121813853 is 3583181214.

It can be written as a sum of positive squares in only one way, i.e., 4102786809 + 19027044 = 64053^2 + 4362^2 .

It is not a de Polignac number, because 4121813853 - 2¹ = 4121813851 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4121813851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 228989650 + ... + 228989667.

Almost surely, 2^4121813853 is an apocalyptic number.

It is an amenable number.

4121813853 is a deficient number, since it is larger than the sum of its proper divisors (1831917281).

4121813853 is a wasteful number, since it uses less digits than its factorization.

4121813853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457979323 (or 457979320 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 4121813853 is about 64201.3539810493. The cubic root of 4121813853 is about 1603.3541424429.

The spelling of 4121813853 in words is "four billion, one hundred twenty-one million, eight hundred thirteen thousand, eight hundred fifty-three".