1368709345 has 4 divisors (see below), whose sum is σ = 1642451220. Its totient is φ = 1094967472.

The previous prime is 1368709333. The next prime is 1368709361. The reversal of 1368709345 is 5439078631.

1368709345 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 495329536 + 873379809 = 22256^2 + 29553^2 .

It is a cyclic number.

It is not a de Polignac number, because 1368709345 - 2⁵ = 1368709313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1368709295 and 1368709304.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136870930 + ... + 136870939.

It is an arithmetic number, because the mean of its divisors is an integer number (410612805).

Almost surely, 2^1368709345 is an apocalyptic number.

It is an amenable number.

1368709345 is a deficient number, since it is larger than the sum of its proper divisors (273741875).

1368709345 is an equidigital number, since it uses as much as digits as its factorization.

1368709345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273741874.

The product of its (nonzero) digits is 544320, while the sum is 46.

The square root of 1368709345 is about 36996.0720212295. The cubic root of 1368709345 is about 1110.2916596887.

The spelling of 1368709345 in words is "one billion, three hundred sixty-eight million, seven hundred nine thousand, three hundred forty-five".