2105263129 has 2 divisors, whose sum is σ = 2105263130. Its totient is φ = 2105263128.

The previous prime is 2105263093. The next prime is 2105263217. The reversal of 2105263129 is 9213625012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1456185600 + 649077529 = 38160^2 + 25477^2 .

It is a cyclic number.

It is not a de Polignac number, because 2105263129 - 2⁷ = 2105263001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2105263129.

It is not a weakly prime, because it can be changed into another prime (2105261129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052631564 + 1052631565.

It is an arithmetic number, because the mean of its divisors is an integer number (1052631565).

Almost surely, 2^2105263129 is an apocalyptic number.

It is an amenable number.

2105263129 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105263129 is an equidigital number, since it uses as much as digits as its factorization.

2105263129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 2105263129 is about 45883.1464592393. The cubic root of 2105263129 is about 1281.6480904759.

The spelling of 2105263129 in words is "two billion, one hundred five million, two hundred sixty-three thousand, one hundred twenty-nine".