1387227509788 has 48 divisors (see below), whose sum is σ = 2624529600000. Its totient is φ = 639605962688.

The previous prime is 1387227509747. The next prime is 1387227509803. The reversal of 1387227509788 is 8879057227831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1363713 + ... + 2152711.

It is an arithmetic number, because the mean of its divisors is an integer number (54677700000).

Almost surely, 2^{1387227509788} is an apocalyptic number.

It is an amenable number.

1387227509788 is a deficient number, since it is larger than the sum of its proper divisors (1237302090212).

1387227509788 is a wasteful number, since it uses less digits than its factorization.

1387227509788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789714 (or 789712 counting only the distinct ones).

The product of its (nonzero) digits is 94832640, while the sum is 67.

The spelling of 1387227509788 in words is "one trillion, three hundred eighty-seven billion, two hundred twenty-seven million, five hundred nine thousand, seven hundred eighty-eight".