1383505984988 has 24 divisors (see below), whose sum is σ = 2430147270432. Its totient is φ = 689178752064.

The previous prime is 1383505984957. The next prime is 1383505985027. The reversal of 1383505984988 is 8894895053831.

It is a Smith number, since the sum of its digits (71) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10597406 + ... + 10727162.

It is an arithmetic number, because the mean of its divisors is an integer number (101256136268).

Almost surely, 2^{1383505984988} is an apocalyptic number.

It is an amenable number.

1383505984988 is a deficient number, since it is larger than the sum of its proper divisors (1046641285444).

1383505984988 is a wasteful number, since it uses less digits than its factorization.

1383505984988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139661 (or 139659 counting only the distinct ones).

The product of its (nonzero) digits is 298598400, while the sum is 71.

The spelling of 1383505984988 in words is "one trillion, three hundred eighty-three billion, five hundred five million, nine hundred eighty-four thousand, nine hundred eighty-eight".