1366802135 has 4 divisors (see below), whose sum is σ = 1640162568. Its totient is φ = 1093441704.

The previous prime is 1366802123. The next prime is 1366802167. The reversal of 1366802135 is 5312086631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5312086631 = 6257 ⋅848983.

It is a cyclic number.

It is not a de Polignac number, because 1366802135 - 2⁴ = 1366802119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1366802095 and 1366802104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136680209 + ... + 136680218.

It is an arithmetic number, because the mean of its divisors is an integer number (410040642).

Almost surely, 2^1366802135 is an apocalyptic number.

1366802135 is a deficient number, since it is larger than the sum of its proper divisors (273360433).

1366802135 is an equidigital number, since it uses as much as digits as its factorization.

1366802135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273360432.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 1366802135 is about 36970.2871912026. The cubic root of 1366802135 is about 1109.7757128741.

Adding to 1366802135 its reverse (5312086631), we get a palindrome (6678888766).

The spelling of 1366802135 in words is "one billion, three hundred sixty-six million, eight hundred two thousand, one hundred thirty-five".