1155154289 has 2 divisors, whose sum is σ = 1155154290. Its totient is φ = 1155154288.

The previous prime is 1155154283. The next prime is 1155154307. The reversal of 1155154289 is 9824515511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 935136400 + 220017889 = 30580^2 + 14833^2 .

It is a cyclic number.

It is not a de Polignac number, because 1155154289 - 2²⁰ = 1154105713 is a prime.

It is not a weakly prime, because it can be changed into another prime (1155154283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577577144 + 577577145.

It is an arithmetic number, because the mean of its divisors is an integer number (577577145).

Almost surely, 2^1155154289 is an apocalyptic number.

It is an amenable number.

1155154289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155154289 is an equidigital number, since it uses as much as digits as its factorization.

1155154289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72000, while the sum is 41.

The square root of 1155154289 is about 33987.5607980332. The cubic root of 1155154289 is about 1049.2524653582.

The spelling of 1155154289 in words is "one billion, one hundred fifty-five million, one hundred fifty-four thousand, two hundred eighty-nine".