1656885011 has 2 divisors, whose sum is σ = 1656885012. Its totient is φ = 1656885010.

The previous prime is 1656885007. The next prime is 1656885019. The reversal of 1656885011 is 1105886561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1656885011 - 2² = 1656885007 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1656885011.

It is not a weakly prime, because it can be changed into another prime (1656885019) 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 as a sum of consecutive naturals, namely, 828442505 + 828442506.

It is an arithmetic number, because the mean of its divisors is an integer number (828442506).

Almost surely, 2^1656885011 is an apocalyptic number.

1656885011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1656885011 is an equidigital number, since it uses as much as digits as its factorization.

1656885011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57600, while the sum is 41.

The square root of 1656885011 is about 40704.8524257244. The cubic root of 1656885011 is about 1183.3070619220.

The spelling of 1656885011 in words is "one billion, six hundred fifty-six million, eight hundred eighty-five thousand, eleven".