1386488144 has 80 divisors (see below), whose sum is σ = 2939811840. Its totient is φ = 631680000.

The previous prime is 1386488143. The next prime is 1386488177. The reversal of 1386488144 is 4418846831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1386488143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 588569 + ... + 590919.

It is an arithmetic number, because the mean of its divisors is an integer number (36747648).

Almost surely, 2^1386488144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1386488144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1469905920).

1386488144 is an abundant number, since it is smaller than the sum of its proper divisors (1553323696).

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

1386488144 is a wasteful number, since it uses less digits than its factorization.

1386488144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2460 (or 2454 counting only the distinct ones).

The product of its digits is 589824, while the sum is 47.

The square root of 1386488144 is about 37235.5763215772. The cubic root of 1386488144 is about 1115.0783576214.

The spelling of 1386488144 in words is "one billion, three hundred eighty-six million, four hundred eighty-eight thousand, one hundred forty-four".