1385871960 has 256 divisors, whose sum is σ = 4846003200. Its totient is φ = 313344000.

The previous prime is 1385871959. The next prime is 1385871997. The reversal of 1385871960 is 691785831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3388236 + ... + 3388644.

It is an arithmetic number, because the mean of its divisors is an integer number (18929700).

Almost surely, 2^1385871960 is an apocalyptic number.

1385871960 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 1385871960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2423001600).

1385871960 is an abundant number, since it is smaller than the sum of its proper divisors (3460131240).

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

1385871960 is a wasteful number, since it uses less digits than its factorization.

1385871960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602 (or 598 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 48.

The square root of 1385871960 is about 37227.3012720503. The cubic root of 1385871960 is about 1114.9131451847.

It can be divided in two parts, 1385871 and 960, that added together give a palindrome (1386831).

The spelling of 1385871960 in words is "one billion, three hundred eighty-five million, eight hundred seventy-one thousand, nine hundred sixty".