1099145617 has 4 divisors (see below), whose sum is σ = 1137047220. Its totient is φ = 1061244016.

The previous prime is 1099145609. The next prime is 1099145627. The reversal of 1099145617 is 7165419901.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7165419901 = 73 ⋅98156437.

It can be written as a sum of positive squares in 2 ways, for example, as 589469841 + 509675776 = 24279^2 + 22576^2 .

It is a cyclic number.

It is not a de Polignac number, because 1099145617 - 2³ = 1099145609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1099145627) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 18950758 + ... + 18950815.

It is an arithmetic number, because the mean of its divisors is an integer number (284261805).

Almost surely, 2^1099145617 is an apocalyptic number.

It is an amenable number.

1099145617 is a deficient number, since it is larger than the sum of its proper divisors (37901603).

1099145617 is an equidigital number, since it uses as much as digits as its factorization.

1099145617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37901602.

The product of its (nonzero) digits is 68040, while the sum is 43.

The square root of 1099145617 is about 33153.3650931546. The cubic root of 1099145617 is about 1032.0127848430.

The spelling of 1099145617 in words is "one billion, ninety-nine million, one hundred forty-five thousand, six hundred seventeen".