2051604229 has 2 divisors, whose sum is σ = 2051604230. Its totient is φ = 2051604228.

The previous prime is 2051604221. The next prime is 2051604239. The reversal of 2051604229 is 9224061502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1349460225 + 702144004 = 36735^2 + 26498^2 .

It is a cyclic number.

It is not a de Polignac number, because 2051604229 - 2³ = 2051604221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2051604229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2051604221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025802114 + 1025802115.

It is an arithmetic number, because the mean of its divisors is an integer number (1025802115).

Almost surely, 2^2051604229 is an apocalyptic number.

It is an amenable number.

2051604229 is a deficient number, since it is larger than the sum of its proper divisors (1).

2051604229 is an equidigital number, since it uses as much as digits as its factorization.

2051604229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 2051604229 is about 45294.6379718394. The cubic root of 2051604229 is about 1270.6653733308.

The spelling of 2051604229 in words is "two billion, fifty-one million, six hundred four thousand, two hundred twenty-nine".