4921768169 has 2 divisors, whose sum is σ = 4921768170. Its totient is φ = 4921768168.

The previous prime is 4921768139. The next prime is 4921768217. The reversal of 4921768169 is 9618671294.

4921768169 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2488812544 + 2432955625 = 49888^2 + 49325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4921768169 is a prime.

It is a super-2 number, since 2×4921768169² = 48447603818763225122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4921768169.

It is not a weakly prime, because it can be changed into another prime (4921768139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2460884084 + 2460884085.

It is an arithmetic number, because the mean of its divisors is an integer number (2460884085).

Almost surely, 2^4921768169 is an apocalyptic number.

It is an amenable number.

4921768169 is a deficient number, since it is larger than the sum of its proper divisors (1).

4921768169 is an equidigital number, since it uses as much as digits as its factorization.

4921768169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 53.

The square root of 4921768169 is about 70155.3146169269. The cubic root of 4921768169 is about 1701.0107218015.

The spelling of 4921768169 in words is "four billion, nine hundred twenty-one million, seven hundred sixty-eight thousand, one hundred sixty-nine".