1368638206 has 16 divisors (see below), whose sum is σ = 2212092288. Its totient is φ = 631332000.

The previous prime is 1368638203. The next prime is 1368638213. The reversal of 1368638206 is 6028368631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1368638203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37236 + ... + 64216.

It is an arithmetic number, because the mean of its divisors is an integer number (138255768).

Almost surely, 2^1368638206 is an apocalyptic number.

1368638206 is a deficient number, since it is larger than the sum of its proper divisors (843454082).

1368638206 is a wasteful number, since it uses less digits than its factorization.

1368638206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28947.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 1368638206 is about 36995.1105688306. The cubic root of 1368638206 is about 1110.2724234627.

The spelling of 1368638206 in words is "one billion, three hundred sixty-eight million, six hundred thirty-eight thousand, two hundred six".