2165250341 has 4 divisors (see below), whose sum is σ = 2167315500. Its totient is φ = 2163185184.

The previous prime is 2165250331. The next prime is 2165250359. The reversal of 2165250341 is 1430525612.

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 1978381441 + 186868900 = 44479^2 + 13670^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2165250341 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165250331) 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, 1031006 + ... + 1033103.

It is an arithmetic number, because the mean of its divisors is an integer number (541828875).

Almost surely, 2^2165250341 is an apocalyptic number.

It is an amenable number.

2165250341 is a deficient number, since it is larger than the sum of its proper divisors (2065159).

2165250341 is a wasteful number, since it uses less digits than its factorization.

2165250341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065158.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 2165250341 is about 46532.2505473354. The cubic root of 2165250341 is about 1293.7073292157.

Adding to 2165250341 its reverse (1430525612), we get a palindrome (3595775953).

The spelling of 2165250341 in words is "two billion, one hundred sixty-five million, two hundred fifty thousand, three hundred forty-one".