1366248853 has 4 divisors (see below), whose sum is σ = 1366853260. Its totient is φ = 1365644448.

The previous prime is 1366248823. The next prime is 1366248859. The reversal of 1366248853 is 3588426631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3588426631 = 4217 ⋅850943.

It can be written as a sum of positive squares in 2 ways, for example, as 184470724 + 1181778129 = 13582^2 + 34377^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1366248853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366248859) 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 3 ways as a sum of consecutive naturals, for example, 298800 + ... + 303337.

It is an arithmetic number, because the mean of its divisors is an integer number (341713315).

Almost surely, 2^1366248853 is an apocalyptic number.

It is an amenable number.

1366248853 is a deficient number, since it is larger than the sum of its proper divisors (604407).

1366248853 is an equidigital number, since it uses as much as digits as its factorization.

1366248853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604406.

The product of its digits is 829440, while the sum is 46.

The square root of 1366248853 is about 36962.8036409578. The cubic root of 1366248853 is about 1109.6259467935.

The spelling of 1366248853 in words is "one billion, three hundred sixty-six million, two hundred forty-eight thousand, eight hundred fifty-three".