2145304229 has 2 divisors, whose sum is σ = 2145304230. Its totient is φ = 2145304228.

The previous prime is 2145304223. The next prime is 2145304241. The reversal of 2145304229 is 9224035412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1855283329 + 290020900 = 43073^2 + 17030^2 .

It is a cyclic number.

It is not a de Polignac number, because 2145304229 - 2²⁰ = 2144255653 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2145304195 and 2145304204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2145304223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072652114 + 1072652115.

It is an arithmetic number, because the mean of its divisors is an integer number (1072652115).

Almost surely, 2^2145304229 is an apocalyptic number.

It is an amenable number.

2145304229 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145304229 is an equidigital number, since it uses as much as digits as its factorization.

2145304229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 2145304229 is about 46317.4289981644. The cubic root of 2145304229 is about 1289.7225589676.

The spelling of 2145304229 in words is "two billion, one hundred forty-five million, three hundred four thousand, two hundred twenty-nine".