1609657368 has 32 divisors (see below), whose sum is σ = 4389975360. Its totient is φ = 487774880.

The previous prime is 1609657351. The next prime is 1609657381. The reversal of 1609657368 is 8637569061.

It is a self number, because there is not a number n which added to its sum of digits gives 1609657368.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 3048330 + ... + 3048857.

It is an arithmetic number, because the mean of its divisors is an integer number (137186730).

Almost surely, 2^1609657368 is an apocalyptic number.

It is an amenable number.

1609657368 is an abundant number, since it is smaller than the sum of its proper divisors (2780317992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1609657368 is a wasteful number, since it uses less digits than its factorization.

1609657368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6097207 (or 6097203 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 51.

The square root of 1609657368 is about 40120.5354899458. The cubic root of 1609657368 is about 1171.9555695318.

The spelling of 1609657368 in words is "one billion, six hundred nine million, six hundred fifty-seven thousand, three hundred sixty-eight".