1061223165 has 24 divisors (see below), whose sum is σ = 1858424568. Its totient is φ = 560148480.

The previous prime is 1061223157. The next prime is 1061223209. The reversal of 1061223165 is 5613221601.

1061223165 is a `hidden beast` number, since 10 + 612 + 2 + 31 + 6 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 124679556 + 936543609 = 11166^2 + 30603^2 .

It is not a de Polignac number, because 1061223165 - 2³ = 1061223157 is a prime.

It is a super-5 number, since 5×1061223165⁵ (a number of 46 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117196 + ... + 125925.

It is an arithmetic number, because the mean of its divisors is an integer number (77434357).

Almost surely, 2^1061223165 is an apocalyptic number.

1061223165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1061223165 is a deficient number, since it is larger than the sum of its proper divisors (797201403).

1061223165 is a wasteful number, since it uses less digits than its factorization.

1061223165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243229 (or 243226 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1061223165 is about 32576.4203834614. The cubic root of 1061223165 is about 1020.0048586850.

Adding to 1061223165 its reverse (5613221601), we get a palindrome (6674444766).

The spelling of 1061223165 in words is "one billion, sixty-one million, two hundred twenty-three thousand, one hundred sixty-five".