1144819805 has 8 divisors (see below), whose sum is σ = 1421155800. Its totient is φ = 884274496.

The previous prime is 1144819789. The next prime is 1144819807. The reversal of 1144819805 is 5089184411.

It can be written as a sum of positive squares in 4 ways, for example, as 11689561 + 1133130244 = 3419^2 + 33662^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1144819805 - 2⁴ = 1144819789 is a prime.

It is a super-2 number, since 2×1144819805² = 2621224771840476050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144819807) 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 7 ways as a sum of consecutive naturals, for example, 3947510 + ... + 3947799.

It is an arithmetic number, because the mean of its divisors is an integer number (177644475).

Almost surely, 2^1144819805 is an apocalyptic number.

It is an amenable number.

1144819805 is a deficient number, since it is larger than the sum of its proper divisors (276335995).

1144819805 is an equidigital number, since it uses as much as digits as its factorization.

1144819805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7895343.

The product of its (nonzero) digits is 46080, while the sum is 41.

The square root of 1144819805 is about 33835.1859016616. The cubic root of 1144819805 is about 1046.1140732685.

The spelling of 1144819805 in words is "one billion, one hundred forty-four million, eight hundred nineteen thousand, eight hundred five".