1646330634 has 48 divisors (see below), whose sum is σ = 3844497384. Its totient is φ = 506160000.

The previous prime is 1646330627. The next prime is 1646330663. The reversal of 1646330634 is 4360336461.

1646330634 is a `hidden beast` number, since 1 + 646 + 3 + 3 + 0 + 6 + 3 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 663320025 + 983010609 = 25755^2 + 31353^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 442984 + ... + 446684.

Almost surely, 2^1646330634 is an apocalyptic number.

1646330634 is an abundant number, since it is smaller than the sum of its proper divisors (2198166750).

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

1646330634 is a wasteful number, since it uses less digits than its factorization.

1646330634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5623 (or 5620 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 36.

The square root of 1646330634 is about 40575.0001109057. Note that the first 3 decimals coincide. The cubic root of 1646330634 is about 1180.7891479837.

The spelling of 1646330634 in words is "one billion, six hundred forty-six million, three hundred thirty thousand, six hundred thirty-four".