1605015005 has 16 divisors (see below), whose sum is σ = 2173564800. Its totient is φ = 1127031360.

The previous prime is 1605014993. The next prime is 1605015007. The reversal of 1605015005 is 5005105061.

It is not a de Polignac number, because 1605015005 - 2⁴ = 1605014989 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1605015007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 501545 + ... + 504734.

It is an arithmetic number, because the mean of its divisors is an integer number (135847800).

Almost surely, 2^1605015005 is an apocalyptic number.

It is an amenable number.

1605015005 is a deficient number, since it is larger than the sum of its proper divisors (568549795).

1605015005 is a wasteful number, since it uses less digits than its factorization.

1605015005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006324.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 1605015005 is about 40062.6385177013. The cubic root of 1605015005 is about 1170.8278177350.

The spelling of 1605015005 in words is "one billion, six hundred five million, fifteen thousand, five".