It is a semiprime because it is the product of two primes.
It is a self number, because there is not a number n which added to its sum of digits gives 1155134534.
It is a congruent number.
It is an unprimeable number.
Almost surely, 21155134534 is an apocalyptic number.
1155134534 is an equidigital number, since it uses as much as digits as its factorization.
1155134534 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 577567269.
The square root of 1155134534 is about 33987.2701757585. The cubic root of 1155134534 is about 1049.2464840214.
The spelling of 1155134534 in words is "one billion, one hundred fifty-five million, one hundred thirty-four thousand, five hundred thirty-four".