2105743769 has 4 divisors (see below), whose sum is σ = 2107016244. Its totient is φ = 2104471296.

The previous prime is 2105743753. The next prime is 2105743793. The reversal of 2105743769 is 9673475012.

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 407232400 + 1698511369 = 20180^2 + 41213^2 .

It is a cyclic number.

It is not a de Polignac number, because 2105743769 - 2⁴ = 2105743753 is a prime.

It is a super-2 number, since 2×2105743769² = 8868313641364650722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2105743069) 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, 633752 + ... + 637065.

It is an arithmetic number, because the mean of its divisors is an integer number (526754061).

Almost surely, 2^2105743769 is an apocalyptic number.

It is an amenable number.

2105743769 is a deficient number, since it is larger than the sum of its proper divisors (1272475).

2105743769 is a wasteful number, since it uses less digits than its factorization.

2105743769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272474.

The product of its (nonzero) digits is 317520, while the sum is 44.

The square root of 2105743769 is about 45888.3838133356. The cubic root of 2105743769 is about 1281.7456181841.

The spelling of 2105743769 in words is "two billion, one hundred five million, seven hundred forty-three thousand, seven hundred sixty-nine".