1609312316 has 6 divisors (see below), whose sum is σ = 2816296560. Its totient is φ = 804656156.

The previous prime is 1609312307. The next prime is 1609312319. The reversal of 1609312316 is 6132139061.

It is a super-2 number, since 2×1609312316² = 5179772260858567712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1609312319) by changing a digit.

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 as a sum of consecutive naturals, namely, 201164036 + ... + 201164043.

It is an arithmetic number, because the mean of its divisors is an integer number (469382760).

Almost surely, 2^1609312316 is an apocalyptic number.

It is an amenable number.

1609312316 is a deficient number, since it is larger than the sum of its proper divisors (1206984244).

1609312316 is a wasteful number, since it uses less digits than its factorization.

1609312316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402328083 (or 402328081 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 1609312316 is about 40116.2350676132. The cubic root of 1609312316 is about 1171.8718219965.

The spelling of 1609312316 in words is "one billion, six hundred nine million, three hundred twelve thousand, three hundred sixteen".