1605651002 has 16 divisors (see below), whose sum is σ = 2423001600. Its totient is φ = 797992272.

The previous prime is 1605650971. The next prime is 1605651007. The reversal of 1605651002 is 2001565061.

It is not an unprimeable number, because it can be changed into a prime (1605651007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 724448 + ... + 726660.

It is an arithmetic number, because the mean of its divisors is an integer number (151437600).

Almost surely, 2^1605651002 is an apocalyptic number.

1605651002 is a deficient number, since it is larger than the sum of its proper divisors (817350598).

1605651002 is a wasteful number, since it uses less digits than its factorization.

1605651002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4237.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 1605651002 is about 40070.5752641511. The cubic root of 1605651002 is about 1170.9824465375.

The spelling of 1605651002 in words is "one billion, six hundred five million, six hundred fifty-one thousand, two".