1605005016 has 16 divisors (see below), whose sum is σ = 4012512600. Its totient is φ = 535001664.

The previous prime is 1605005009. The next prime is 1605005023. The reversal of 1605005016 is 6105005061.

It is an interprime number because it is at equal distance from previous prime (1605005009) and next prime (1605005023).

It is a super-2 number, since 2×1605005016² = 5152082202770320512, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 66875209 = 1605005016 / (1 + 6 + 0 + 5 + 0 + 0 + 5 + 0 + 1 + 6).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33437581 + ... + 33437628.

Almost surely, 2^1605005016 is an apocalyptic number.

It is an amenable number.

1605005016 is an abundant number, since it is smaller than the sum of its proper divisors (2407507584).

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

1605005016 is a wasteful number, since it uses less digits than its factorization.

1605005016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66875218 (or 66875214 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 1605005016 is about 40062.5138502316. The cubic root of 1605005016 is about 1170.8253888016.

The spelling of 1605005016 in words is "one billion, six hundred five million, five thousand, sixteen".