1090722005 has 8 divisors (see below), whose sum is σ = 1312132824. Its totient is φ = 870400000.

The previous prime is 1090721993. The next prime is 1090722041. The reversal of 1090722005 is 5002270901.

It can be written as a sum of positive squares in 4 ways, for example, as 394975876 + 695746129 = 19874^2 + 26377^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-1090722005 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269996 + ... + 274005.

It is an arithmetic number, because the mean of its divisors is an integer number (164016603).

Almost surely, 2^1090722005 is an apocalyptic number.

It is an amenable number.

1090722005 is a deficient number, since it is larger than the sum of its proper divisors (221410819).

1090722005 is an equidigital number, since it uses as much as digits as its factorization.

1090722005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544407.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 1090722005 is about 33026.0806787605. The cubic root of 1090722005 is about 1029.3696476127.

Adding to 1090722005 its reverse (5002270901), we get a palindrome (6092992906).

The spelling of 1090722005 in words is "one billion, ninety million, seven hundred twenty-two thousand, five".