1564446049 has 2 divisors, whose sum is σ = 1564446050. Its totient is φ = 1564446048.

The previous prime is 1564446041. The next prime is 1564446053. The reversal of 1564446049 is 9406444651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1459240000 + 105206049 = 38200^2 + 10257^2 .

It is a cyclic number.

It is not a de Polignac number, because 1564446049 - 2³ = 1564446041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1564445996 and 1564446014.

It is not a weakly prime, because it can be changed into another prime (1564446041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 782223024 + 782223025.

It is an arithmetic number, because the mean of its divisors is an integer number (782223025).

Almost surely, 2^1564446049 is an apocalyptic number.

It is an amenable number.

1564446049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1564446049 is an equidigital number, since it uses as much as digits as its factorization.

1564446049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 43.

The square root of 1564446049 is about 39553.0788814221. The cubic root of 1564446049 is about 1160.8787557038.

The spelling of 1564446049 in words is "one billion, five hundred sixty-four million, four hundred forty-six thousand, forty-nine".