1363645313 has 4 divisors (see below), whose sum is σ = 1363738368. Its totient is φ = 1363552260.

The previous prime is 1363645289. The next prime is 1363645319. The reversal of 1363645313 is 3135463631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3135463631 = 9749 ⋅321619.

It is a cyclic number.

It is not a de Polignac number, because 1363645313 - 2¹⁸ = 1363383169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1363645319) 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, 19193 + ... + 55638.

It is an arithmetic number, because the mean of its divisors is an integer number (340934592).

Almost surely, 2^1363645313 is an apocalyptic number.

It is an amenable number.

1363645313 is a deficient number, since it is larger than the sum of its proper divisors (93055).

1363645313 is an equidigital number, since it uses as much as digits as its factorization.

1363645313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93054.

The product of its digits is 58320, while the sum is 35.

The square root of 1363645313 is about 36927.5684685575. The cubic root of 1363645313 is about 1108.9206598193.

The spelling of 1363645313 in words is "one billion, three hundred sixty-three million, six hundred forty-five thousand, three hundred thirteen".