2051441605 has 4 divisors (see below), whose sum is σ = 2461729932. Its totient is φ = 1641153280.

The previous prime is 2051441597. The next prime is 2051441621. The reversal of 2051441605 is 5061441502.

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 781873444 + 1269568161 = 27962^2 + 35631^2 .

It is not a de Polignac number, because 2051441605 - 2³ = 2051441597 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 3 ways as a sum of consecutive naturals, for example, 205144156 + ... + 205144165.

It is an arithmetic number, because the mean of its divisors is an integer number (615432483).

Almost surely, 2^2051441605 is an apocalyptic number.

It is an amenable number.

2051441605 is a deficient number, since it is larger than the sum of its proper divisors (410288327).

2051441605 is an equidigital number, since it uses as much as digits as its factorization.

2051441605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410288326.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 2051441605 is about 45292.8427568860. The cubic root of 2051441605 is about 1270.6317986054.

The spelling of 2051441605 in words is "two billion, fifty-one million, four hundred forty-one thousand, six hundred five".