1099783457 has 4 divisors (see below), whose sum is σ = 1117812756. Its totient is φ = 1081754160.

The previous prime is 1099783439. The next prime is 1099783459. The reversal of 1099783457 is 7543879901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7543879901 = 47 ⋅160508083.

It can be written as a sum of positive squares in 2 ways, for example, as 514337041 + 585446416 = 22679^2 + 24196^2 .

It is a cyclic number.

It is not a de Polignac number, because 1099783457 - 2⁶ = 1099783393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1099783399 and 1099783408.

It is not an unprimeable number, because it can be changed into a prime (1099783459) 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, 9014558 + ... + 9014679.

It is an arithmetic number, because the mean of its divisors is an integer number (279453189).

Almost surely, 2^1099783457 is an apocalyptic number.

It is an amenable number.

1099783457 is a deficient number, since it is larger than the sum of its proper divisors (18029299).

1099783457 is an equidigital number, since it uses as much as digits as its factorization.

1099783457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18029298.

The product of its (nonzero) digits is 1905120, while the sum is 53.

The square root of 1099783457 is about 33162.9832343232. The cubic root of 1099783457 is about 1032.2123737283.

The spelling of 1099783457 in words is "one billion, ninety-nine million, seven hundred eighty-three thousand, four hundred fifty-seven".