1368834643 has 12 divisors (see below), whose sum is σ = 1506256920. Its totient is φ = 1243014080.

The previous prime is 1368834641. The next prime is 1368834661. The reversal of 1368834643 is 3464388631.

It is not a de Polignac number, because 1368834643 - 2¹ = 1368834641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1368834593 and 1368834602.

It is not an unprimeable number, because it can be changed into a prime (1368834641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112428 + ... + 124006.

It is an arithmetic number, because the mean of its divisors is an integer number (125521410).

Almost surely, 2^1368834643 is an apocalyptic number.

1368834643 is a deficient number, since it is larger than the sum of its proper divisors (137422277).

1368834643 is a wasteful number, since it uses less digits than its factorization.

1368834643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12578 (or 12567 counting only the distinct ones).

The product of its digits is 995328, while the sum is 46.

The square root of 1368834643 is about 36997.7653784658. The cubic root of 1368834643 is about 1110.3255390705.

The spelling of 1368834643 in words is "one billion, three hundred sixty-eight million, eight hundred thirty-four thousand, six hundred forty-three".