2164787365 has 8 divisors (see below), whose sum is σ = 2797571448. Its totient is φ = 1598612160.

The previous prime is 2164787351. The next prime is 2164787377. The reversal of 2164787365 is 5637874612.

It can be written as a sum of positive squares in 4 ways, for example, as 290157156 + 1874630209 = 17034^2 + 43297^2 .

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

It is not a de Polignac number, because 2164787365 - 2¹¹ = 2164785317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16652146 + ... + 16652275.

It is an arithmetic number, because the mean of its divisors is an integer number (349696431).

Almost surely, 2^2164787365 is an apocalyptic number.

It is an amenable number.

2164787365 is a deficient number, since it is larger than the sum of its proper divisors (632784083).

2164787365 is a wasteful number, since it uses less digits than its factorization.

2164787365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33304439.

The product of its digits is 1693440, while the sum is 49.

The square root of 2164787365 is about 46527.2754951330. The cubic root of 2164787365 is about 1293.6151153766.

The spelling of 2164787365 in words is "two billion, one hundred sixty-four million, seven hundred eighty-seven thousand, three hundred sixty-five".