1630805794 has 8 divisors (see below), whose sum is σ = 2458626588. Its totient is φ = 811263600.

The previous prime is 1630805773. The next prime is 1630805819. The reversal of 1630805794 is 4975080361.

It can be written as a sum of positive squares in 2 ways, for example, as 1442100625 + 188705169 = 37975^2 + 13737^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1630805794.

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, 2069157 + ... + 2069944.

Almost surely, 2^1630805794 is an apocalyptic number.

1630805794 is a deficient number, since it is larger than the sum of its proper divisors (827820794).

1630805794 is a wasteful number, since it uses less digits than its factorization.

1630805794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4139300.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 1630805794 is about 40383.2365468643. The cubic root of 1630805794 is about 1177.0658196723.

The spelling of 1630805794 in words is "one billion, six hundred thirty million, eight hundred five thousand, seven hundred ninety-four".