1386120015 has 48 divisors (see below), whose sum is σ = 2890368000. Its totient is φ = 600302016.

The previous prime is 1386120013. The next prime is 1386120049. The reversal of 1386120015 is 5100216831.

1386120015 is a `hidden beast` number, since 1 + 38 + 612 + 0 + 0 + 15 = 666.

1386120015 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1386120015 - 2¹ = 1386120013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1386120013) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 109815 + ... + 121784.

It is an arithmetic number, because the mean of its divisors is an integer number (60216000).

Almost surely, 2^1386120015 is an apocalyptic number.

1386120015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1386120015 is an abundant number, since it is smaller than the sum of its proper divisors (1504247985).

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

1386120015 is a wasteful number, since it uses less digits than its factorization.

1386120015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231636 (or 231633 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1386120015 is about 37230.6327504650. The cubic root of 1386120015 is about 1114.9796600551.

Adding to 1386120015 its reverse (5100216831), we get a palindrome (6486336846).

The spelling of 1386120015 in words is "one billion, three hundred eighty-six million, one hundred twenty thousand, fifteen".