1361817853 has 6 divisors (see below), whose sum is σ = 1496874302. Its totient is φ = 1238016120.

The previous prime is 1361817841. The next prime is 1361817901. The reversal of 1361817853 is 3587181631.

It can be written as a sum of positive squares in only one way, i.e., 1075971204 + 285846649 = 32802^2 + 16907^2 .

It is not a de Polignac number, because 1361817853 - 2⁹ = 1361817341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361817053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5627226 + ... + 5627467.

Almost surely, 2^1361817853 is an apocalyptic number.

It is an amenable number.

1361817853 is a deficient number, since it is larger than the sum of its proper divisors (135056449).

1361817853 is a wasteful number, since it uses less digits than its factorization.

1361817853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11254715 (or 11254704 counting only the distinct ones).

The product of its digits is 120960, while the sum is 43.

The square root of 1361817853 is about 36902.8163288386. The cubic root of 1361817853 is about 1108.4250729623.

The spelling of 1361817853 in words is "one billion, three hundred sixty-one million, eight hundred seventeen thousand, eight hundred fifty-three".