1630730305 has 16 divisors (see below), whose sum is σ = 1974693888. Its totient is φ = 1292760000.

The previous prime is 1630730273. The next prime is 1630730359. The reversal of 1630730305 is 5030370361.

It is not a de Polignac number, because 1630730305 - 2⁵ = 1630730273 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 255655 + ... + 261955.

It is an arithmetic number, because the mean of its divisors is an integer number (123418368).

Almost surely, 2^1630730305 is an apocalyptic number.

It is an amenable number.

1630730305 is a deficient number, since it is larger than the sum of its proper divisors (343963583).

1630730305 is a wasteful number, since it uses less digits than its factorization.

1630730305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6768.

The product of its (nonzero) digits is 5670, while the sum is 28.

The square root of 1630730305 is about 40382.3018784219. The cubic root of 1630730305 is about 1177.0476575071.

The spelling of 1630730305 in words is "one billion, six hundred thirty million, seven hundred thirty thousand, three hundred five".