1629816009 has 16 divisors (see below), whose sum is σ = 2182967232. Its totient is φ = 1081617408.

The previous prime is 1629816007. The next prime is 1629816047. The reversal of 1629816009 is 9006189261.

It is not a de Polignac number, because 1629816009 - 2¹ = 1629816007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1629816007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 715897 + ... + 718169.

It is an arithmetic number, because the mean of its divisors is an integer number (136435452).

Almost surely, 2^1629816009 is an apocalyptic number.

It is an amenable number.

1629816009 is a deficient number, since it is larger than the sum of its proper divisors (553151223).

1629816009 is a wasteful number, since it uses less digits than its factorization.

1629816009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3256.

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 1629816009 is about 40370.9797874661. The cubic root of 1629816009 is about 1176.8276392841.

The spelling of 1629816009 in words is "one billion, six hundred twenty-nine million, eight hundred sixteen thousand, nine".