1105813 has 2 divisors, whose sum is σ = 1105814. Its totient is φ = 1105812.

The previous prime is 1105807. The next prime is 1105823. The reversal of 1105813 is 3185011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1096209 + 9604 = 1047^2 + 98^2 .

It is an emirp because it is prime and its reverse (3185011) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1105813 is a prime.

1105813 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1105823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552906 + 552907.

It is an arithmetic number, because the mean of its divisors is an integer number (552907).

2^1105813 is an apocalyptic number.

It is an amenable number.

1105813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105813 is an equidigital number, since it uses as much as digits as its factorization.

1105813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 1105813 is about 1051.5764356432. The cubic root of 1105813 is about 103.4095298792.

The spelling of 1105813 in words is "one million, one hundred five thousand, eight hundred thirteen".