1386418 has 24 divisors (see below), whose sum is σ = 2427516. Its totient is φ = 591360.

The previous prime is 1386383. The next prime is 1386419. The reversal of 1386418 is 8146831.

It can be written as a sum of positive squares in 2 ways, for example, as 1385329 + 1089 = 1177^2 + 33^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1386418.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1386419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3946 + ... + 4282.

2^1386418 is an apocalyptic number.

1386418 is a deficient number, since it is larger than the sum of its proper divisors (1041098).

1386418 is a wasteful number, since it uses less digits than its factorization.

1386418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378 (or 367 counting only the distinct ones).

The product of its digits is 4608, while the sum is 31.

The square root of 1386418 is about 1177.4625259430. The cubic root of 1386418 is about 111.5059552947.

It can be divided in two parts, 138 and 6418, that added together give a palindrome (6556).

The spelling of 1386418 in words is "one million, three hundred eighty-six thousand, four hundred eighteen".