2169117493 has 2 divisors, whose sum is σ = 2169117494. Its totient is φ = 2169117492.

The previous prime is 2169117451. The next prime is 2169117529. The reversal of 2169117493 is 3947119612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2153609649 + 15507844 = 46407^2 + 3938^2 .

It is a cyclic number.

It is not a de Polignac number, because 2169117493 - 2⁹ = 2169116981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2169117593) 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, 1084558746 + 1084558747.

It is an arithmetic number, because the mean of its divisors is an integer number (1084558747).

Almost surely, 2^2169117493 is an apocalyptic number.

It is an amenable number.

2169117493 is a deficient number, since it is larger than the sum of its proper divisors (1).

2169117493 is an equidigital number, since it uses as much as digits as its factorization.

2169117493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 43.

The square root of 2169117493 is about 46573.7854699401. The cubic root of 2169117493 is about 1294.4770612109.

The spelling of 2169117493 in words is "two billion, one hundred sixty-nine million, one hundred seventeen thousand, four hundred ninety-three".