1144161569 has 2 divisors, whose sum is σ = 1144161570. Its totient is φ = 1144161568.

The previous prime is 1144161559. The next prime is 1144161581. The reversal of 1144161569 is 9651614411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 711022225 + 433139344 = 26665^2 + 20812^2 .

It is a cyclic number.

It is not a de Polignac number, because 1144161569 - 2⁴ = 1144161553 is a prime.

It is a super-2 number, since 2×1144161569² = 2618211391953083522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1144161559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572080784 + 572080785.

It is an arithmetic number, because the mean of its divisors is an integer number (572080785).

Almost surely, 2^1144161569 is an apocalyptic number.

It is an amenable number.

1144161569 is a deficient number, since it is larger than the sum of its proper divisors (1).

1144161569 is an equidigital number, since it uses as much as digits as its factorization.

1144161569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 38.

The square root of 1144161569 is about 33825.4574100632. The cubic root of 1144161569 is about 1045.9135404117.

The spelling of 1144161569 in words is "one billion, one hundred forty-four million, one hundred sixty-one thousand, five hundred sixty-nine".