1651565606 has 32 divisors (see below), whose sum is σ = 2682069408. Its totient is φ = 759882240.

The previous prime is 1651565603. The next prime is 1651565621. The reversal of 1651565606 is 6065651561.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1651565603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 356501 + ... + 361103.

It is an arithmetic number, because the mean of its divisors is an integer number (83814669).

Almost surely, 2^1651565606 is an apocalyptic number.

1651565606 is a deficient number, since it is larger than the sum of its proper divisors (1030503802).

1651565606 is a wasteful number, since it uses less digits than its factorization.

1651565606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4856.

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 1651565606 is about 40639.4587316317. The cubic root of 1651565606 is about 1182.0393743391.

The spelling of 1651565606 in words is "one billion, six hundred fifty-one million, five hundred sixty-five thousand, six hundred six".