2169229481 has 2 divisors, whose sum is σ = 2169229482. Its totient is φ = 2169229480.

The previous prime is 2169229441. The next prime is 2169229547. The reversal of 2169229481 is 1849229612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1802851600 + 366377881 = 42460^2 + 19141^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2169229481 is a prime.

It is a super-2 number, since 2×2169229481² = 9411113082479058722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2169229441) 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, 1084614740 + 1084614741.

It is an arithmetic number, because the mean of its divisors is an integer number (1084614741).

Almost surely, 2^2169229481 is an apocalyptic number.

It is an amenable number.

2169229481 is a deficient number, since it is larger than the sum of its proper divisors (1).

2169229481 is an equidigital number, since it uses as much as digits as its factorization.

2169229481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 44.

The square root of 2169229481 is about 46574.9877187316. The cubic root of 2169229481 is about 1294.4993380743.

The spelling of 2169229481 in words is "two billion, one hundred sixty-nine million, two hundred twenty-nine thousand, four hundred eighty-one".