2053865730 has 128 divisors (see below), whose sum is σ = 5975617536. Its totient is φ = 441619200.

The previous prime is 2053865719. The next prime is 2053865747. The reversal of 2053865730 is 375683502.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 291145 + ... + 298115.

It is an arithmetic number, because the mean of its divisors is an integer number (46684512).

Almost surely, 2^2053865730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2053865730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2987808768).

2053865730 is an abundant number, since it is smaller than the sum of its proper divisors (3921751806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2053865730 is a wasteful number, since it uses less digits than its factorization.

2053865730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7072.

The product of its (nonzero) digits is 151200, while the sum is 39.

The square root of 2053865730 is about 45319.5954306744. The cubic root of 2053865730 is about 1271.1320903433.

It can be divided in two parts, 20538 and 65730, that added together give a palindrome (86268).

The spelling of 2053865730 in words is "two billion, fifty-three million, eight hundred sixty-five thousand, seven hundred thirty".