1368684653 has 4 divisors (see below), whose sum is σ = 1564211040. Its totient is φ = 1173158268.

The previous prime is 1368684641. The next prime is 1368684683. The reversal of 1368684653 is 3564868631.

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: 3564868631 = 97 ⋅36751223.

It is a cyclic number.

It is not a de Polignac number, because 1368684653 - 2¹⁰ = 1368683629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1368684613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97763183 + ... + 97763196.

It is an arithmetic number, because the mean of its divisors is an integer number (391052760).

Almost surely, 2^1368684653 is an apocalyptic number.

It is an amenable number.

1368684653 is a deficient number, since it is larger than the sum of its proper divisors (195526387).

1368684653 is an equidigital number, since it uses as much as digits as its factorization.

1368684653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195526386.

The product of its digits is 2488320, while the sum is 50.

The square root of 1368684653 is about 36995.7383086214. The cubic root of 1368684653 is about 1110.2849829640.

The spelling of 1368684653 in words is "one billion, three hundred sixty-eight million, six hundred eighty-four thousand, six hundred fifty-three".