1155484489 has 2 divisors, whose sum is σ = 1155484490. Its totient is φ = 1155484488.

The previous prime is 1155484423. The next prime is 1155484493. The reversal of 1155484489 is 9844845511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 859369225 + 296115264 = 29315^2 + 17208^2 .

It is a cyclic number.

It is not a de Polignac number, because 1155484489 - 2⁹ = 1155483977 is a prime.

It is a super-2 number, since 2×1155484489² = 2670288808639182242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1155484409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577742244 + 577742245.

It is an arithmetic number, because the mean of its divisors is an integer number (577742245).

Almost surely, 2^1155484489 is an apocalyptic number.

It is an amenable number.

1155484489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155484489 is an equidigital number, since it uses as much as digits as its factorization.

1155484489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 921600, while the sum is 49.

The square root of 1155484489 is about 33992.4181105140. The cubic root of 1155484489 is about 1049.3524318477.

The spelling of 1155484489 in words is "one billion, one hundred fifty-five million, four hundred eighty-four thousand, four hundred eighty-nine".