1386305660 has 12 divisors (see below), whose sum is σ = 2911241928. Its totient is φ = 554522256.

The previous prime is 1386305633. The next prime is 1386305663. The reversal of 1386305660 is 665036831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1386305663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34657622 + ... + 34657661.

It is an arithmetic number, because the mean of its divisors is an integer number (242603494).

Almost surely, 2^1386305660 is an apocalyptic number.

1386305660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1386305660 is an abundant number, since it is smaller than the sum of its proper divisors (1524936268).

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

1386305660 is a wasteful number, since it uses less digits than its factorization.

1386305660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69315292 (or 69315290 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 1386305660 is about 37233.1258424538. The cubic root of 1386305660 is about 1115.0294347636.

The spelling of 1386305660 in words is "one billion, three hundred eighty-six million, three hundred five thousand, six hundred sixty".