1609268285 has 8 divisors (see below), whose sum is σ = 1941792216. Its totient is φ = 1280301120.

The previous prime is 1609268273. The next prime is 1609268291. The reversal of 1609268285 is 5828629061.

It can be written as a sum of positive squares in 4 ways, for example, as 7107556 + 1602160729 = 2666^2 + 40027^2 .

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

It is not a de Polignac number, because 1609268285 - 2²⁰ = 1608219709 is a prime.

It is a super-3 number, since 3×1609268285³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

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, 888194 + ... + 890003.

It is an arithmetic number, because the mean of its divisors is an integer number (242724027).

Almost surely, 2^1609268285 is an apocalyptic number.

It is an amenable number.

1609268285 is a deficient number, since it is larger than the sum of its proper divisors (332523931).

1609268285 is a wasteful number, since it uses less digits than its factorization.

1609268285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778383.

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 1609268285 is about 40115.6862710835. The cubic root of 1609268285 is about 1171.8611343758.

The spelling of 1609268285 in words is "one billion, six hundred nine million, two hundred sixty-eight thousand, two hundred eighty-five".