1605131006 has 16 divisors (see below), whose sum is σ = 2443573440. Its totient is φ = 790651680.

The previous prime is 1605130997. The next prime is 1605131027. The reversal of 1605131006 is 6001315061.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61820 + ... + 83856.

It is an arithmetic number, because the mean of its divisors is an integer number (152723340).

Almost surely, 2^1605131006 is an apocalyptic number.

1605131006 is a deficient number, since it is larger than the sum of its proper divisors (838442434).

1605131006 is a wasteful number, since it uses less digits than its factorization.

1605131006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22579.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1605131006 is about 40064.0862369280. The cubic root of 1605131006 is about 1170.8560238941.

Adding to 1605131006 its reverse (6001315061), we get a palindrome (7606446067).

The spelling of 1605131006 in words is "one billion, six hundred five million, one hundred thirty-one thousand, six".