1071216165 has 8 divisors (see below), whose sum is σ = 1713945888. Its totient is φ = 571315280.

The previous prime is 1071216163. The next prime is 1071216187. The reversal of 1071216165 is 5616121701.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1071216165 - 2¹ = 1071216163 is a prime.

It is a super-2 number, since 2×1071216165² = 2295008144314614450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1071216161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35707191 + ... + 35707220.

It is an arithmetic number, because the mean of its divisors is an integer number (214243236).

Almost surely, 2^1071216165 is an apocalyptic number.

1071216165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1071216165 is a deficient number, since it is larger than the sum of its proper divisors (642729723).

1071216165 is an equidigital number, since it uses as much as digits as its factorization.

1071216165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71414419.

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 1071216165 is about 32729.4388127875. The cubic root of 1071216165 is about 1023.1964842861.

Adding to 1071216165 its reverse (5616121701), we get a palindrome (6687337866).

The spelling of 1071216165 in words is "one billion, seventy-one million, two hundred sixteen thousand, one hundred sixty-five".