1389658206 has 16 divisors (see below), whose sum is σ = 2900156544. Its totient is φ = 443079384.

The previous prime is 1389658187. The next prime is 1389658213. The reversal of 1389658206 is 6028569831.

It is a happy number.

It is a super-2 number, since 2×1389658206² = 3862299859006276872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5034856 + ... + 5035131.

It is an arithmetic number, because the mean of its divisors is an integer number (181259784).

Almost surely, 2^1389658206 is an apocalyptic number.

1389658206 is an abundant number, since it is smaller than the sum of its proper divisors (1510498338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1389658206 is a wasteful number, since it uses less digits than its factorization.

1389658206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10070015.

The product of its (nonzero) digits is 622080, while the sum is 48.

The square root of 1389658206 is about 37278.1196682451. The cubic root of 1389658206 is about 1115.9275479358.

The spelling of 1389658206 in words is "one billion, three hundred eighty-nine million, six hundred fifty-eight thousand, two hundred six".