1386426384 has 180 divisors, whose sum is σ = 4710341376. Its totient is φ = 378854784.

The previous prime is 1386426383. The next prime is 1386426401. The reversal of 1386426384 is 4836246831.

1386426384 is a `hidden beast` number, since 1 + 3 + 8 + 6 + 4 + 2 + 638 + 4 = 666.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1386426383) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 158017 + ... + 166559.

Almost surely, 2^1386426384 is an apocalyptic number.

1386426384 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1386426384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2355170688).

1386426384 is an abundant number, since it is smaller than the sum of its proper divisors (3323914992).

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

1386426384 is a wasteful number, since it uses less digits than its factorization.

1386426384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8594 (or 8578 counting only the distinct ones).

The product of its digits is 663552, while the sum is 45.

The square root of 1386426384 is about 37234.7469979319. The cubic root of 1386426384 is about 1115.0618006191.

The spelling of 1386426384 in words is "one billion, three hundred eighty-six million, four hundred twenty-six thousand, three hundred eighty-four".