1387138156764 has 24 divisors (see below), whose sum is σ = 3236675570688. Its totient is φ = 462376546800.

The previous prime is 1387138156753. The next prime is 1387138156799. The reversal of 1387138156764 is 4676518317831.

It is a junction number, because it is equal to n+sod(n) for n = 1387138156698 and 1387138156707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2810739 + ... + 3267189.

It is an arithmetic number, because the mean of its divisors is an integer number (134861482112).

Almost surely, 2^{1387138156764} is an apocalyptic number.

It is an amenable number.

1387138156764 is an abundant number, since it is smaller than the sum of its proper divisors (1849537413924).

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

1387138156764 is a wasteful number, since it uses less digits than its factorization.

1387138156764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709705 (or 709703 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 60.

The spelling of 1387138156764 in words is "one trillion, three hundred eighty-seven billion, one hundred thirty-eight million, one hundred fifty-six thousand, seven hundred sixty-four".