1090110649 has 4 divisors (see below), whose sum is σ = 1092913380. Its totient is φ = 1087307920.

The previous prime is 1090110647. The next prime is 1090110701. The reversal of 1090110649 is 9460110901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9460110901 = 37 ⋅255678673.

It can be written as a sum of positive squares in 2 ways, for example, as 621604624 + 468506025 = 24932^2 + 21645^2 .

It is a cyclic number.

It is not a de Polignac number, because 1090110649 - 2¹ = 1090110647 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1090110649.

It is not an unprimeable number, because it can be changed into a prime (1090110647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1400782 + ... + 1401559.

It is an arithmetic number, because the mean of its divisors is an integer number (273228345).

Almost surely, 2^1090110649 is an apocalyptic number.

It is an amenable number.

1090110649 is a deficient number, since it is larger than the sum of its proper divisors (2802731).

1090110649 is an equidigital number, since it uses as much as digits as its factorization.

1090110649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2802730.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 1090110649 is about 33016.8237267003. The cubic root of 1090110649 is about 1029.1772891195.

The spelling of 1090110649 in words is "one billion, ninety million, one hundred ten thousand, six hundred forty-nine".