1605322056 has 32 divisors (see below), whose sum is σ = 4322021760. Its totient is φ = 493945152.

The previous prime is 1605322051. The next prime is 1605322063. The reversal of 1605322056 is 6502235061.

It is not an unprimeable number, because it can be changed into a prime (1605322051) 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 in 7 ways as a sum of consecutive naturals, for example, 2572320 + ... + 2572943.

It is an arithmetic number, because the mean of its divisors is an integer number (135063180).

Almost surely, 2^1605322056 is an apocalyptic number.

It is an amenable number.

1605322056 is an abundant number, since it is smaller than the sum of its proper divisors (2716699704).

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

1605322056 is a wasteful number, since it uses less digits than its factorization.

1605322056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5145285 (or 5145281 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 1605322056 is about 40066.4704709561. The cubic root of 1605322056 is about 1170.9024755893.

The spelling of 1605322056 in words is "one billion, six hundred five million, three hundred twenty-two thousand, fifty-six".