1144001161 has 2 divisors, whose sum is σ = 1144001162. Its totient is φ = 1144001160.

The previous prime is 1144001129. The next prime is 1144001227. The reversal of 1144001161 is 1611004411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1067263561 + 76737600 = 32669^2 + 8760^2 .

It is a cyclic number.

It is not a de Polignac number, because 1144001161 - 2⁵ = 1144001129 is a prime.

It is not a weakly prime, because it can be changed into another prime (1144001561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572000580 + 572000581.

It is an arithmetic number, because the mean of its divisors is an integer number (572000581).

Almost surely, 2^1144001161 is an apocalyptic number.

It is an amenable number.

1144001161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1144001161 is an equidigital number, since it uses as much as digits as its factorization.

1144001161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 1144001161 is about 33823.0862134135. The cubic root of 1144001161 is about 1045.8646601531.

Adding to 1144001161 its reverse (1611004411), we get a palindrome (2755005572).

The spelling of 1144001161 in words is "one billion, one hundred forty-four million, one thousand, one hundred sixty-one".