1386381 has 8 divisors (see below), whose sum is σ = 1854144. Its totient is φ = 921440.

The previous prime is 1386379. The next prime is 1386383. The reversal of 1386381 is 1836831.

It is an interprime number because it is at equal distance from previous prime (1386379) and next prime (1386383).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1386381 - 2¹ = 1386379 is a prime.

It is a super-2 number, since 2×1386381² = 3844104554322, which contains 22 as substring.

1386381 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1386383) 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 7 ways as a sum of consecutive naturals, for example, 1120 + ... + 2006.

It is an arithmetic number, because the mean of its divisors is an integer number (231768).

2^1386381 is an apocalyptic number.

It is an amenable number.

1386381 is a deficient number, since it is larger than the sum of its proper divisors (467763).

1386381 is an equidigital number, since it uses as much as digits as its factorization.

1386381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411.

The product of its digits is 3456, while the sum is 30.

The square root of 1386381 is about 1177.4468140855. The cubic root of 1386381 is about 111.5049633483.

The spelling of 1386381 in words is "one million, three hundred eighty-six thousand, three hundred eighty-one".