1606872229 has 2 divisors, whose sum is σ = 1606872230. Its totient is φ = 1606872228.

The previous prime is 1606872209. The next prime is 1606872233. The reversal of 1606872229 is 9222786061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1512821025 + 94051204 = 38895^2 + 9698^2 .

It is an emirp because it is prime and its reverse (9222786061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1606872229 - 2⁷ = 1606872101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1606872209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 803436114 + 803436115.

It is an arithmetic number, because the mean of its divisors is an integer number (803436115).

Almost surely, 2^1606872229 is an apocalyptic number.

It is an amenable number.

1606872229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1606872229 is an equidigital number, since it uses as much as digits as its factorization.

1606872229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 1606872229 is about 40085.8108187922. The cubic root of 1606872229 is about 1171.2792468134.

The spelling of 1606872229 in words is "one billion, six hundred six million, eight hundred seventy-two thousand, two hundred twenty-nine".