2065388111 has 4 divisors (see below), whose sum is σ = 2104357752. Its totient is φ = 2026418472.

The previous prime is 2065388093. The next prime is 2065388119. The reversal of 2065388111 is 1118835602.

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

It is a cyclic number.

It is not a de Polignac number, because 2065388111 - 2¹⁰ = 2065387087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2065388119) 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, 19484741 + ... + 19484846.

It is an arithmetic number, because the mean of its divisors is an integer number (526089438).

Almost surely, 2^2065388111 is an apocalyptic number.

2065388111 is a deficient number, since it is larger than the sum of its proper divisors (38969641).

2065388111 is an equidigital number, since it uses as much as digits as its factorization.

2065388111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38969640.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 2065388111 is about 45446.5412435314. The cubic root of 2065388111 is about 1273.5047160579.

The spelling of 2065388111 in words is "two billion, sixty-five million, three hundred eighty-eight thousand, one hundred eleven".