1564460449 has 2 divisors, whose sum is σ = 1564460450. Its totient is φ = 1564460448.

The previous prime is 1564460431. The next prime is 1564460489. The reversal of 1564460449 is 9440644651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1490500449 + 73960000 = 38607^2 + 8600^2 .

It is a cyclic number.

It is not a de Polignac number, because 1564460449 - 2²⁵ = 1530906017 is a prime.

It is not a weakly prime, because it can be changed into another prime (1564460489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 782230224 + 782230225.

It is an arithmetic number, because the mean of its divisors is an integer number (782230225).

Almost surely, 2^1564460449 is an apocalyptic number.

It is an amenable number.

1564460449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1564460449 is an equidigital number, since it uses as much as digits as its factorization.

1564460449 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 1564460449 is about 39553.2609148727. The cubic root of 1564460449 is about 1160.8823174763.

The spelling of 1564460449 in words is "one billion, five hundred sixty-four million, four hundred sixty thousand, four hundred forty-nine".