1656320255 has 16 divisors (see below), whose sum is σ = 2045088864. Its totient is φ = 1287006720.

The previous prime is 1656320203. The next prime is 1656320257. The reversal of 1656320255 is 5520236561.

It is a de Polignac number, because none of the positive numbers 2^k-1656320255 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1656320257) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 28739 + ... + 64331.

It is an arithmetic number, because the mean of its divisors is an integer number (127818054).

Almost surely, 2^1656320255 is an apocalyptic number.

1656320255 is a deficient number, since it is larger than the sum of its proper divisors (388768609).

1656320255 is a wasteful number, since it uses less digits than its factorization.

1656320255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35866.

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 1656320255 is about 40697.9146271649. The cubic root of 1656320255 is about 1183.1726016342.

The spelling of 1656320255 in words is "one billion, six hundred fifty-six million, three hundred twenty thousand, two hundred fifty-five".