202628928149 has 4 divisors (see below), whose sum is σ = 203513770860. Its totient is φ = 201744085440.

The previous prime is 202628928143. The next prime is 202628928157. The reversal of 202628928149 is 941829826202.

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 183232795249 + 19396132900 = 428057^2 + 139270^2 .

It is a cyclic number.

It is not a de Polignac number, because 202628928149 - 2⁴ = 202628928133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202628928149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202628928143) 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, 442421012 + ... + 442421469.

It is an arithmetic number, because the mean of its divisors is an integer number (50878442715).

Almost surely, 2^202628928149 is an apocalyptic number.

It is an amenable number.

202628928149 is a deficient number, since it is larger than the sum of its proper divisors (884842711).

202628928149 is an equidigital number, since it uses as much as digits as its factorization.

202628928149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884842710.

The product of its (nonzero) digits is 1990656, while the sum is 53.

The spelling of 202628928149 in words is "two hundred two billion, six hundred twenty-eight million, nine hundred twenty-eight thousand, one hundred forty-nine".