1138123813388 has 6 divisors (see below), whose sum is σ = 1991716673436. Its totient is φ = 569061906692.

The previous prime is 1138123813363. The next prime is 1138123813391. The reversal of 1138123813388 is 8833183218311.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142265476670 + ... + 142265476677.

It is an arithmetic number, because the mean of its divisors is an integer number (331952778906).

Almost surely, 2^{1138123813388} is an apocalyptic number.

It is an amenable number.

1138123813388 is a deficient number, since it is larger than the sum of its proper divisors (853592860048).

1138123813388 is a wasteful number, since it uses less digits than its factorization.

1138123813388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284530953351 (or 284530953349 counting only the distinct ones).

The product of its digits is 663552, while the sum is 50.

The spelling of 1138123813388 in words is "one trillion, one hundred thirty-eight billion, one hundred twenty-three million, eight hundred thirteen thousand, three hundred eighty-eight".