2028946251 has 4 divisors (see below), whose sum is σ = 2705261672. Its totient is φ = 1352630832.

The previous prime is 2028946237. The next prime is 2028946279. The reversal of 2028946251 is 1526498202.

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

It is not a de Polignac number, because 2028946251 - 2⁹ = 2028945739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2028946211) 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, 338157706 + ... + 338157711.

It is an arithmetic number, because the mean of its divisors is an integer number (676315418).

Almost surely, 2^2028946251 is an apocalyptic number.

2028946251 is a deficient number, since it is larger than the sum of its proper divisors (676315421).

2028946251 is an equidigital number, since it uses as much as digits as its factorization.

2028946251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676315420.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 2028946251 is about 45043.8258921242. The cubic root of 2028946251 is about 1265.9702911002.

The spelling of 2028946251 in words is "two billion, twenty-eight million, nine hundred forty-six thousand, two hundred fifty-one".