4173361921 has 2 divisors, whose sum is σ = 4173361922. Its totient is φ = 4173361920.

The previous prime is 4173361919. The next prime is 4173361939. The reversal of 4173361921 is 1291633714.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3109623696 + 1063738225 = 55764^2 + 32615^2 .

It is a cyclic number.

It is not a de Polignac number, because 4173361921 - 2¹ = 4173361919 is a prime.

It is a super-3 number, since 3×4173361921³ (a number of 30 digits) contains 333 as substring.

Together with 4173361919, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4173361721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2086680960 + 2086680961.

It is an arithmetic number, because the mean of its divisors is an integer number (2086680961).

Almost surely, 2^4173361921 is an apocalyptic number.

It is an amenable number.

4173361921 is a deficient number, since it is larger than the sum of its proper divisors (1).

4173361921 is an equidigital number, since it uses as much as digits as its factorization.

4173361921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 37.

The square root of 4173361921 is about 64601.5628371327. The cubic root of 4173361921 is about 1610.0104060385.

The spelling of 4173361921 in words is "four billion, one hundred seventy-three million, three hundred sixty-one thousand, nine hundred twenty-one".