1386840960 has 256 divisors, whose sum is σ = 5201755200. Its totient is φ = 347996160.

The previous prime is 1386840953. The next prime is 1386840967. The reversal of 1386840960 is 690486831.

It is an interprime number because it is at equal distance from previous prime (1386840953) and next prime (1386840967).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1386840967) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 291400 + ... + 296120.

Almost surely, 2^1386840960 is an apocalyptic number.

1386840960 is a gapful number since it is divisible by the number (10) 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 1386840960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2600877600).

1386840960 is an abundant number, since it is smaller than the sum of its proper divisors (3814914240).

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

1386840960 is a wasteful number, since it uses less digits than its factorization.

1386840960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4766 (or 4748 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 1386840960 is about 37240.3136399252. The cubic root of 1386840960 is about 1115.1729332876.

The spelling of 1386840960 in words is "one billion, three hundred eighty-six million, eight hundred forty thousand, nine hundred sixty".