1601309305 has 16 divisors (see below), whose sum is σ = 2036235024. Its totient is φ = 1204725760.

The previous prime is 1601309267. The next prime is 1601309323. The reversal of 1601309305 is 5039031061.

It can be written as a sum of positive squares in 8 ways, for example, as 106172416 + 1495136889 = 10304^2 + 38667^2 .

It is not a de Polignac number, because 1601309305 - 2¹³ = 1601301113 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 (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109845 + ... + 123565.

It is an arithmetic number, because the mean of its divisors is an integer number (127264689).

Almost surely, 2^1601309305 is an apocalyptic number.

It is an amenable number.

1601309305 is a deficient number, since it is larger than the sum of its proper divisors (434925719).

1601309305 is a wasteful number, since it uses less digits than its factorization.

1601309305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15116.

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 1601309305 is about 40016.3629656669. The cubic root of 1601309305 is about 1169.9260442211.

The spelling of 1601309305 in words is "one billion, six hundred one million, three hundred nine thousand, three hundred five".