1000161065 has 8 divisors (see below), whose sum is σ = 1206225600. Its totient is φ = 796107312.

The previous prime is 1000161061. The next prime is 1000161073. The reversal of 1000161065 is 5601610001.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1000161065 - 2² = 1000161061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1000161061) 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, 501599 + ... + 503588.

It is an arithmetic number, because the mean of its divisors is an integer number (150778200).

Almost surely, 2^1000161065 is an apocalyptic number.

It is an amenable number.

1000161065 is a deficient number, since it is larger than the sum of its proper divisors (206064535).

1000161065 is a wasteful number, since it uses less digits than its factorization.

1000161065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005391.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 1000161065 is about 31625.3231604042. The cubic root of 1000161065 is about 1000.0536854512.

Adding to 1000161065 its reverse (5601610001), we get a palindrome (6601771066).

The spelling of 1000161065 in words is "one billion, one hundred sixty-one thousand, sixty-five".