2105450993 has 2 divisors, whose sum is σ = 2105450994. Its totient is φ = 2105450992.

The previous prime is 2105450987. The next prime is 2105451067. The reversal of 2105450993 is 3990545012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1908553969 + 196897024 = 43687^2 + 14032^2 .

It is a cyclic number.

It is not a de Polignac number, because 2105450993 - 2¹² = 2105446897 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2105450903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052725496 + 1052725497.

It is an arithmetic number, because the mean of its divisors is an integer number (1052725497).

Almost surely, 2^2105450993 is an apocalyptic number.

It is an amenable number.

2105450993 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105450993 is an equidigital number, since it uses as much as digits as its factorization.

2105450993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 2105450993 is about 45885.1936140625. The cubic root of 2105450993 is about 1281.6862121358.

The spelling of 2105450993 in words is "two billion, one hundred five million, four hundred fifty thousand, nine hundred ninety-three".