1609645000322 has 6 divisors (see below), whose sum is σ = 2414470191843. Its totient is φ = 804821603042.

The previous prime is 1609645000321. The next prime is 1609645000441. The reversal of 1609645000322 is 2230005469061.

It can be written as a sum of positive squares in only one way, i.e., 804822500161 + 804822500161 = 897119^2 + 897119^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=897119.

It is a super-2 number, since 2×1609645000322² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1609645000321) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1345679 + ... + 2242797.

Almost surely, 2^{1609645000322} is an apocalyptic number.

1609645000322 is a deficient number, since it is larger than the sum of its proper divisors (804825191521).

1609645000322 is an frugal number, since it uses more digits than its factorization.

1609645000322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1794240 (or 897121 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 1609645000322 in words is "one trillion, six hundred nine billion, six hundred forty-five million, three hundred twenty-two", and thus it is an aban number.