1386716540 has 24 divisors (see below), whose sum is σ = 3176842032. Its totient is φ = 504260480.

The previous prime is 1386716491. The next prime is 1386716543. The reversal of 1386716540 is 456176831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1386716543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3151409 + ... + 3151848.

It is an arithmetic number, because the mean of its divisors is an integer number (132368418).

Almost surely, 2^1386716540 is an apocalyptic number.

1386716540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1386716540 is an abundant number, since it is smaller than the sum of its proper divisors (1790125492).

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

1386716540 is a wasteful number, since it uses less digits than its factorization.

1386716540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6303277 (or 6303275 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 1386716540 is about 37238.6431009509. The cubic root of 1386716540 is about 1115.1395831608.

The spelling of 1386716540 in words is "one billion, three hundred eighty-six million, seven hundred sixteen thousand, five hundred forty".