1386253386 has 128 divisors (see below), whose sum is σ = 3589632000. Its totient is φ = 388411200.

The previous prime is 1386253339. The next prime is 1386253403. The reversal of 1386253386 is 6833526831.

1386253386 is a `hidden beast` number, since 1 + 38 + 6 + 2 + 533 + 86 = 666.

It is a Curzon number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 8504541 + ... + 8504703.

It is an arithmetic number, because the mean of its divisors is an integer number (28044000).

Almost surely, 2^1386253386 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1386253386, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1794816000).

1386253386 is an abundant number, since it is smaller than the sum of its proper divisors (2203378614).

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

1386253386 is a wasteful number, since it uses less digits than its factorization.

1386253386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481 (or 475 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 1386253386 is about 37232.4238534103. The cubic root of 1386253386 is about 1115.0154196290.

The spelling of 1386253386 in words is "one billion, three hundred eighty-six million, two hundred fifty-three thousand, three hundred eighty-six".