1316553569 has 2 divisors, whose sum is σ = 1316553570. Its totient is φ = 1316553568.

The previous prime is 1316553547. The next prime is 1316553587. The reversal of 1316553569 is 9653556131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1000140625 + 316412944 = 31625^2 + 17788^2 .

It is a cyclic number.

It is not a de Polignac number, because 1316553569 - 2²⁴ = 1299776353 is a prime.

It is a super-2 number, since 2×1316553569² = 3466626600093275522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1316553769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658276784 + 658276785.

It is an arithmetic number, because the mean of its divisors is an integer number (658276785).

Almost surely, 2^1316553569 is an apocalyptic number.

It is an amenable number.

1316553569 is a deficient number, since it is larger than the sum of its proper divisors (1).

1316553569 is an equidigital number, since it uses as much as digits as its factorization.

1316553569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 364500, while the sum is 44.

The square root of 1316553569 is about 36284.3433039651. The cubic root of 1316553569 is about 1096.0057810558.

The spelling of 1316553569 in words is "one billion, three hundred sixteen million, five hundred fifty-three thousand, five hundred sixty-nine".