1386643122 has 54 divisors (see below), whose sum is σ = 3073363839. Its totient is φ = 451839960.

The previous prime is 1386643109. The next prime is 1386643127. The reversal of 1386643122 is 2213466831.

1386643122 is a `hidden beast` number, since 1 + 3 + 8 + 6 + 643 + 1 + 2 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 693321561 + 693321561 = 26331^2 + 26331^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=26331.

It is not an unprimeable number, because it can be changed into a prime (1386643127) 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 26 ways as a sum of consecutive naturals, for example, 10584997 + ... + 10585127.

Almost surely, 2^1386643122 is an apocalyptic number.

1386643122 is an abundant number, since it is smaller than the sum of its proper divisors (1686720717).

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

1386643122 is an equidigital number, since it uses as much as digits as its factorization.

1386643122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404 (or 203 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 1386643122 is about 37237.6573108460. The cubic root of 1386643122 is about 1115.1199029160.

Multiplying 1386643122 by its product of digits (41472), we get a square (57506863555584 = 7583328²).

The spelling of 1386643122 in words is "one billion, three hundred eighty-six million, six hundred forty-three thousand, one hundred twenty-two".