1564784141 has 2 divisors, whose sum is σ = 1564784142. Its totient is φ = 1564784140.

The previous prime is 1564784119. The next prime is 1564784171. The reversal of 1564784141 is 1414874651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1564518916 + 265225 = 39554^2 + 515^2 .

It is an emirp because it is prime and its reverse (1414874651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1564784141 - 2²² = 1560589837 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1564784171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 782392070 + 782392071.

It is an arithmetic number, because the mean of its divisors is an integer number (782392071).

Almost surely, 2^1564784141 is an apocalyptic number.

It is an amenable number.

1564784141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1564784141 is an equidigital number, since it uses as much as digits as its factorization.

1564784141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107520, while the sum is 41.

The square root of 1564784141 is about 39557.3525529705. The cubic root of 1564784141 is about 1160.9623754086.

The spelling of 1564784141 in words is "one billion, five hundred sixty-four million, seven hundred eighty-four thousand, one hundred forty-one".