2157728303 has 2 divisors, whose sum is σ = 2157728304. Its totient is φ = 2157728302.

The previous prime is 2157728249. The next prime is 2157728327. The reversal of 2157728303 is 3038277512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2157728303 - 2⁸ = 2157728047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2157728203) by changing a digit.

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 as a sum of consecutive naturals, namely, 1078864151 + 1078864152.

It is an arithmetic number, because the mean of its divisors is an integer number (1078864152).

Almost surely, 2^2157728303 is an apocalyptic number.

2157728303 is a deficient number, since it is larger than the sum of its proper divisors (1).

2157728303 is an equidigital number, since it uses as much as digits as its factorization.

2157728303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 2157728303 is about 46451.3541567950. The cubic root of 2157728303 is about 1292.2074862788.

The spelling of 2157728303 in words is "two billion, one hundred fifty-seven million, seven hundred twenty-eight thousand, three hundred three".