1646513606 has 16 divisors (see below), whose sum is σ = 2483024544. Its totient is φ = 818846784.

The previous prime is 1646513591. The next prime is 1646513639. The reversal of 1646513606 is 6063156461.

It is a super-2 number, since 2×1646513606² = 5422014109486246472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1646513606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 787895 + ... + 789981.

It is an arithmetic number, because the mean of its divisors is an integer number (155189034).

Almost surely, 2^1646513606 is an apocalyptic number.

1646513606 is a deficient number, since it is larger than the sum of its proper divisors (836510938).

1646513606 is a wasteful number, since it uses less digits than its factorization.

1646513606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4015.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 1646513606 is about 40577.2547863948. The cubic root of 1646513606 is about 1180.8328903815.

The spelling of 1646513606 in words is "one billion, six hundred forty-six million, five hundred thirteen thousand, six hundred six".