1155665170 has 32 divisors (see below), whose sum is σ = 2282022720. Its totient is φ = 417887040.

The previous prime is 1155665149. The next prime is 1155665171. The reversal of 1155665170 is 715665511.

It is a super-2 number, since 2×1155665170² = 2671123970302257800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1155665171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9657 + ... + 49036.

It is an arithmetic number, because the mean of its divisors is an integer number (71313210).

Almost surely, 2^1155665170 is an apocalyptic number.

1155665170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1155665170 is a deficient number, since it is larger than the sum of its proper divisors (1126357550).

1155665170 is a wasteful number, since it uses less digits than its factorization.

1155665170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58890.

The product of its (nonzero) digits is 31500, while the sum is 37.

The square root of 1155665170 is about 33995.0756728088. The cubic root of 1155665170 is about 1049.4071241051.

The spelling of 1155665170 in words is "one billion, one hundred fifty-five million, six hundred sixty-five thousand, one hundred seventy".