2105843357 has 2 divisors, whose sum is σ = 2105843358. Its totient is φ = 2105843356.

The previous prime is 2105843317. The next prime is 2105843401. The reversal of 2105843357 is 7533485012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1858127236 + 247716121 = 43106^2 + 15739^2 .

It is a cyclic number.

It is not a de Polignac number, because 2105843357 - 2⁶ = 2105843293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2105843357.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2105843317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052921678 + 1052921679.

It is an arithmetic number, because the mean of its divisors is an integer number (1052921679).

Almost surely, 2^2105843357 is an apocalyptic number.

It is an amenable number.

2105843357 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105843357 is an equidigital number, since it uses as much as digits as its factorization.

2105843357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 2105843357 is about 45889.4689117231. The cubic root of 2105843357 is about 1281.7658239458.

The spelling of 2105843357 in words is "two billion, one hundred five million, eight hundred forty-three thousand, three hundred fifty-seven".