2057326729 has 4 divisors (see below), whose sum is σ = 2128269060. Its totient is φ = 1986384400.

The previous prime is 2057326717. The next prime is 2057326753. The reversal of 2057326729 is 9276237502.

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 597704704 + 1459622025 = 24448^2 + 38205^2 .

It is a cyclic number.

It is not a de Polignac number, because 2057326729 - 2¹⁵ = 2057293961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2057320729) 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, 35471122 + ... + 35471179.

It is an arithmetic number, because the mean of its divisors is an integer number (532067265).

Almost surely, 2^2057326729 is an apocalyptic number.

2057326729 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2057326729 is a deficient number, since it is larger than the sum of its proper divisors (70942331).

2057326729 is an equidigital number, since it uses as much as digits as its factorization.

2057326729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70942330.

The product of its (nonzero) digits is 317520, while the sum is 43.

The square root of 2057326729 is about 45357.7637125112. The cubic root of 2057326729 is about 1271.8456907154.

The spelling of 2057326729 in words is "two billion, fifty-seven million, three hundred twenty-six thousand, seven hundred twenty-nine".