2028786751 has 4 divisors (see below), whose sum is σ = 2029695912. Its totient is φ = 2027877592.

The previous prime is 2028786713. The next prime is 2028786757. The reversal of 2028786751 is 1576878202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2028786751 - 2²³ = 2020398143 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 (2028786757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 451225 + ... + 455698.

It is an arithmetic number, because the mean of its divisors is an integer number (507423978).

Almost surely, 2^2028786751 is an apocalyptic number.

2028786751 is a deficient number, since it is larger than the sum of its proper divisors (909161).

2028786751 is an equidigital number, since it uses as much as digits as its factorization.

2028786751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909160.

The product of its (nonzero) digits is 376320, while the sum is 46.

The square root of 2028786751 is about 45042.0553594083. The cubic root of 2028786751 is about 1265.9371166461.

The spelling of 2028786751 in words is "two billion, twenty-eight million, seven hundred eighty-six thousand, seven hundred fifty-one".