1387723368 has 64 divisors (see below), whose sum is σ = 3669465600. Its totient is φ = 436121280.

The previous prime is 1387723321. The next prime is 1387723427. The reversal of 1387723368 is 8633277831.

It is a super-3 number, since 3×1387723368³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89005 + ... + 103427.

It is an arithmetic number, because the mean of its divisors is an integer number (57335400).

Almost surely, 2^1387723368 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 1387723368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1834732800).

1387723368 is an abundant number, since it is smaller than the sum of its proper divisors (2281742232).

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

1387723368 is a wasteful number, since it uses less digits than its factorization.

1387723368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14662 (or 14658 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 48.

The square root of 1387723368 is about 37252.1592394320. The cubic root of 1387723368 is about 1115.4094008939.

The spelling of 1387723368 in words is "one billion, three hundred eighty-seven million, seven hundred twenty-three thousand, three hundred sixty-eight".