1609795505 has 8 divisors (see below), whose sum is σ = 1978870824. Its totient is φ = 1256425600.

The previous prime is 1609795493. The next prime is 1609795511. The reversal of 1609795505 is 5055979061.

It can be written as a sum of positive squares in 4 ways, for example, as 195132961 + 1414662544 = 13969^2 + 37612^2 .

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

It is not a de Polignac number, because 1609795505 - 2¹² = 1609791409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1609795505.

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, 3926126 + ... + 3926535.

It is an arithmetic number, because the mean of its divisors is an integer number (247358853).

Almost surely, 2^1609795505 is an apocalyptic number.

It is an amenable number.

1609795505 is a deficient number, since it is larger than the sum of its proper divisors (369075319).

1609795505 is an equidigital number, since it uses as much as digits as its factorization.

1609795505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7852707.

The product of its (nonzero) digits is 425250, while the sum is 47.

The square root of 1609795505 is about 40122.2569778920. The cubic root of 1609795505 is about 1171.9890933941.

The spelling of 1609795505 in words is "one billion, six hundred nine million, seven hundred ninety-five thousand, five hundred five".