2165301001 has 4 divisors (see below), whose sum is σ = 2166638404. Its totient is φ = 2163963600.

The previous prime is 2165300993. The next prime is 2165301007. The reversal of 2165301001 is 1001035612.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1199583225 + 965717776 = 34635^2 + 31076^2 .

It is a cyclic number.

It is not a de Polignac number, because 2165301001 - 2³ = 2165300993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2165301001.

It is not an unprimeable number, because it can be changed into a prime (2165301007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 666270 + ... + 669511.

It is an arithmetic number, because the mean of its divisors is an integer number (541659601).

Almost surely, 2^2165301001 is an apocalyptic number.

It is an amenable number.

2165301001 is a deficient number, since it is larger than the sum of its proper divisors (1337403).

2165301001 is a wasteful number, since it uses less digits than its factorization.

2165301001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337402.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 2165301001 is about 46532.7948977922. The cubic root of 2165301001 is about 1293.7174186883.

Adding to 2165301001 its reverse (1001035612), we get a palindrome (3166336613).

The spelling of 2165301001 in words is "two billion, one hundred sixty-five million, three hundred one thousand, one".