1646103216 has 20 divisors (see below), whose sum is σ = 4252433432. Its totient is φ = 548701056.

The previous prime is 1646103157. The next prime is 1646103257. The reversal of 1646103216 is 6123016461.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 17146861 + ... + 17146956.

Almost surely, 2^1646103216 is an apocalyptic number.

1646103216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1646103216 is an abundant number, since it is smaller than the sum of its proper divisors (2606330216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1646103216 is a wasteful number, since it uses less digits than its factorization.

1646103216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34293828 (or 34293822 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 1646103216 is about 40572.1975742010. The cubic root of 1646103216 is about 1180.7347755374.

Adding to 1646103216 its reverse (6123016461), we get a palindrome (7769119677).

The spelling of 1646103216 in words is "one billion, six hundred forty-six million, one hundred three thousand, two hundred sixteen".