1155830566 has 16 divisors (see below), whose sum is σ = 1901931840. Its totient is φ = 522440680.

The previous prime is 1155830509. The next prime is 1155830603. The reversal of 1155830566 is 6650385511.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 142816 + ... + 150691.

It is an arithmetic number, because the mean of its divisors is an integer number (118870740).

Almost surely, 2^1155830566 is an apocalyptic number.

1155830566 is a deficient number, since it is larger than the sum of its proper divisors (746101274).

1155830566 is a wasteful number, since it uses less digits than its factorization.

1155830566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293699.

The product of its (nonzero) digits is 108000, while the sum is 40.

The square root of 1155830566 is about 33997.5082322220. The cubic root of 1155830566 is about 1049.4571845856.

Subtracting 1155830566 from its reverse (6650385511), we obtain a palindrome (5494554945).

It can be divided in two parts, 11558 and 30566, that added together give a palindrome (42124).

The spelling of 1155830566 in words is "one billion, one hundred fifty-five million, eight hundred thirty thousand, five hundred sixty-six".