1813779353 has 2 divisors, whose sum is σ = 1813779354. Its totient is φ = 1813779352.

The previous prime is 1813779347. The next prime is 1813779467. The reversal of 1813779353 is 3539773181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1579903504 + 233875849 = 39748^2 + 15293^2 .

It is a cyclic number.

It is not a de Polignac number, because 1813779353 - 2¹⁴ = 1813762969 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1813779298 and 1813779307.

It is not a weakly prime, because it can be changed into another prime (1813770353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 906889676 + 906889677.

It is an arithmetic number, because the mean of its divisors is an integer number (906889677).

Almost surely, 2^1813779353 is an apocalyptic number.

It is an amenable number.

1813779353 is a deficient number, since it is larger than the sum of its proper divisors (1).

1813779353 is an equidigital number, since it uses as much as digits as its factorization.

1813779353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 476280, while the sum is 47.

The square root of 1813779353 is about 42588.4885033503. The cubic root of 1813779353 is about 1219.5365419143.

The spelling of 1813779353 in words is "one billion, eight hundred thirteen million, seven hundred seventy-nine thousand, three hundred fifty-three".