2100428279 has 2 divisors, whose sum is σ = 2100428280. Its totient is φ = 2100428278.

The previous prime is 2100428263. The next prime is 2100428329. The reversal of 2100428279 is 9728240012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2100428279 - 2⁴ = 2100428263 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2100428249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050214139 + 1050214140.

It is an arithmetic number, because the mean of its divisors is an integer number (1050214140).

Almost surely, 2^2100428279 is an apocalyptic number.

2100428279 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100428279 is an equidigital number, since it uses as much as digits as its factorization.

2100428279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 2100428279 is about 45830.4296183224. The cubic root of 2100428279 is about 1280.6662138581. Note that the first 3 decimals are identical.

The spelling of 2100428279 in words is "two billion, one hundred million, four hundred twenty-eight thousand, two hundred seventy-nine".