1385970631808 has 128 divisors (see below), whose sum is σ = 3456393379200. Its totient is φ = 539769323520.

The previous prime is 1385970631807. The next prime is 1385970631817. The reversal of 1385970631808 is 8081360795831.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (1385970631807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1127078 + ... + 2010533.

It is an arithmetic number, because the mean of its divisors is an integer number (27003073275).

Almost surely, 2^{1385970631808} is an apocalyptic number.

It is an amenable number.

1385970631808 is an abundant number, since it is smaller than the sum of its proper divisors (2070422747392).

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

1385970631808 is a wasteful number, since it uses less digits than its factorization.

1385970631808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3137678 (or 3137666 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 59.

The spelling of 1385970631808 in words is "one trillion, three hundred eighty-five billion, nine hundred seventy million, six hundred thirty-one thousand, eight hundred eight".