1605241356 has 12 divisors (see below), whose sum is σ = 3745563192. Its totient is φ = 535080448.

The previous prime is 1605241283. The next prime is 1605241387. The reversal of 1605241356 is 6531425061.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1605241356² = 5153599622025437472, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66885045 + ... + 66885068.

It is an arithmetic number, because the mean of its divisors is an integer number (312130266).

Almost surely, 2^1605241356 is an apocalyptic number.

It is an amenable number.

1605241356 is an abundant number, since it is smaller than the sum of its proper divisors (2140321836).

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

1605241356 is a wasteful number, since it uses less digits than its factorization.

1605241356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133770120 (or 133770118 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 1605241356 is about 40065.4633818205. The cubic root of 1605241356 is about 1170.8828547262.

The spelling of 1605241356 in words is "one billion, six hundred five million, two hundred forty-one thousand, three hundred fifty-six".