1564076161 has 2 divisors, whose sum is σ = 1564076162. Its totient is φ = 1564076160.

The previous prime is 1564076149. The next prime is 1564076251. The reversal of 1564076161 is 1616704651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1519440400 + 44635761 = 38980^2 + 6681^2 .

It is an emirp because it is prime and its reverse (1616704651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1564076161 - 2¹³ = 1564067969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1564076161.

It is not a weakly prime, because it can be changed into another prime (1564076131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 782038080 + 782038081.

It is an arithmetic number, because the mean of its divisors is an integer number (782038081).

Almost surely, 2^1564076161 is an apocalyptic number.

It is an amenable number.

1564076161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1564076161 is an equidigital number, since it uses as much as digits as its factorization.

1564076161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 1564076161 is about 39548.4027616793. The cubic root of 1564076161 is about 1160.7872581485.

The spelling of 1564076161 in words is "one billion, five hundred sixty-four million, seventy-six thousand, one hundred sixty-one".