1363681049 has 4 divisors (see below), whose sum is σ = 1374090960. Its totient is φ = 1353271140.

The previous prime is 1363681021. The next prime is 1363681057. The reversal of 1363681049 is 9401863631.

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 an emirpimes, since its reverse is a distinct semiprime: 9401863631 = 22961 ⋅409471.

It is a cyclic number.

It is not a de Polignac number, because 1363681049 - 2²⁰ = 1362632473 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1363680997 and 1363681015.

It is not an unprimeable number, because it can be changed into a prime (1363681009) 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, 5204759 + ... + 5205020.

It is an arithmetic number, because the mean of its divisors is an integer number (343522740).

Almost surely, 2^1363681049 is an apocalyptic number.

It is an amenable number.

1363681049 is a deficient number, since it is larger than the sum of its proper divisors (10409911).

1363681049 is a wasteful number, since it uses less digits than its factorization.

1363681049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10409910.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 1363681049 is about 36928.0523315270. The cubic root of 1363681049 is about 1108.9303466105.

The spelling of 1363681049 in words is "one billion, three hundred sixty-three million, six hundred eighty-one thousand, forty-nine".