105488813 has 4 divisors (see below), whose sum is σ = 108339900. Its totient is φ = 102637728.

The previous prime is 105488809. The next prime is 105488843. The reversal of 105488813 is 318884501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42159049 + 63329764 = 6493^2 + 7958^2 .

It is a cyclic number.

It is not a de Polignac number, because 105488813 - 2² = 105488809 is a prime.

It is a super-2 number, since 2×105488813² = 22255779336297938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105488843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1425488 + ... + 1425561.

It is an arithmetic number, because the mean of its divisors is an integer number (27084975).

Almost surely, 2^105488813 is an apocalyptic number.

It is an amenable number.

105488813 is a deficient number, since it is larger than the sum of its proper divisors (2851087).

105488813 is an equidigital number, since it uses as much as digits as its factorization.

105488813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2851086.

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 105488813 is about 10270.7747030105. The cubic root of 105488813 is about 472.5003506805.

The spelling of 105488813 in words is "one hundred five million, four hundred eighty-eight thousand, eight hundred thirteen".