2105113453 has 2 divisors, whose sum is σ = 2105113454. Its totient is φ = 2105113452.

The previous prime is 2105113447. The next prime is 2105113457. The reversal of 2105113453 is 3543115012.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1911263524 + 193849929 = 43718^2 + 13923^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2105113453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2105113457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052556726 + 1052556727.

It is an arithmetic number, because the mean of its divisors is an integer number (1052556727).

Almost surely, 2^2105113453 is an apocalyptic number.

It is an amenable number.

2105113453 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105113453 is an equidigital number, since it uses as much as digits as its factorization.

2105113453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 2105113453 is about 45881.5153738409. The cubic root of 2105113453 is about 1281.6177163620.

Adding to 2105113453 its reverse (3543115012), we get a palindrome (5648228465).

The spelling of 2105113453 in words is "two billion, one hundred five million, one hundred thirteen thousand, four hundred fifty-three".