1363681013 has 2 divisors, whose sum is σ = 1363681014. Its totient is φ = 1363681012.

The previous prime is 1363681009. The next prime is 1363681021. The reversal of 1363681013 is 3101863631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 939238609 + 424442404 = 30647^2 + 20602^2 .

It is a cyclic number.

It is not a de Polignac number, because 1363681013 - 2² = 1363681009 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1363681003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 681840506 + 681840507.

It is an arithmetic number, because the mean of its divisors is an integer number (681840507).

Almost surely, 2^1363681013 is an apocalyptic number.

It is an amenable number.

1363681013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1363681013 is an equidigital number, since it uses as much as digits as its factorization.

1363681013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 1363681013 is about 36928.0518440927. The cubic root of 1363681013 is about 1108.9303368523.

It can be divided in two parts, 13636 and 81013, that added together give a palindrome (94649).

The spelling of 1363681013 in words is "one billion, three hundred sixty-three million, six hundred eighty-one thousand, thirteen".