1387960278384 has 40 divisors (see below), whose sum is σ = 3585736926720. Its totient is φ = 462631119808.

The previous prime is 1387960278359. The next prime is 1387960278389. The reversal of 1387960278384 is 4838720697831.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387960278389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324289 + ... + 1697375.

It is an arithmetic number, because the mean of its divisors is an integer number (89643423168).

Almost surely, 2^{1387960278384} is an apocalyptic number.

It is an amenable number.

1387960278384 is an abundant number, since it is smaller than the sum of its proper divisors (2197776648336).

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

1387960278384 is a wasteful number, since it uses less digits than its factorization.

1387960278384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1394157 (or 1394151 counting only the distinct ones).

The product of its (nonzero) digits is 97542144, while the sum is 66.

The spelling of 1387960278384 in words is "one trillion, three hundred eighty-seven billion, nine hundred sixty million, two hundred seventy-eight thousand, three hundred eighty-four".