2028651853 has 4 divisors (see below), whose sum is σ = 2029068028. Its totient is φ = 2028235680.

The previous prime is 2028651839. The next prime is 2028651883. The reversal of 2028651853 is 3581568202.

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 1103701284 + 924950569 = 33222^2 + 30413^2 .

It is a cyclic number.

It is not a de Polignac number, because 2028651853 - 2²¹ = 2026554701 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 (2028651883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200688 + ... + 210553.

It is an arithmetic number, because the mean of its divisors is an integer number (507267007).

Almost surely, 2^2028651853 is an apocalyptic number.

It is an amenable number.

2028651853 is a deficient number, since it is larger than the sum of its proper divisors (416175).

2028651853 is an equidigital number, since it uses as much as digits as its factorization.

2028651853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416174.

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 2028651853 is about 45040.5578673266. The cubic root of 2028651853 is about 1265.9090578124.

The spelling of 2028651853 in words is "two billion, twenty-eight million, six hundred fifty-one thousand, eight hundred fifty-three".