1363680857 has 32 divisors (see below), whose sum is σ = 1823109120. Its totient is φ = 987367680.

The previous prime is 1363680853. The next prime is 1363680859. The reversal of 1363680857 is 7580863631.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1363680857 - 2² = 1363680853 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1363680853) 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 31 ways as a sum of consecutive naturals, for example, 96818 + ... + 110004.

It is an arithmetic number, because the mean of its divisors is an integer number (56972160).

Almost surely, 2^1363680857 is an apocalyptic number.

1363680857 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1363680857 is a deficient number, since it is larger than the sum of its proper divisors (459428263).

1363680857 is a wasteful number, since it uses less digits than its factorization.

1363680857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13301.

The product of its (nonzero) digits is 725760, while the sum is 47.

The square root of 1363680857 is about 36928.0497318773. The cubic root of 1363680857 is about 1108.9302945664.

The spelling of 1363680857 in words is "one billion, three hundred sixty-three million, six hundred eighty thousand, eight hundred fifty-seven".