1388055384 has 48 divisors (see below), whose sum is σ = 3764685600. Its totient is φ = 462024384.

The previous prime is 1388055343. The next prime is 1388055413. The reversal of 1388055384 is 4835508831.

1388055384 is a `hidden beast` number, since 1 + 38 + 80 + 5 + 538 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38362 + ... + 65174.

It is an arithmetic number, because the mean of its divisors is an integer number (78430950).

Almost surely, 2^1388055384 is an apocalyptic number.

It is an amenable number.

1388055384 is an abundant number, since it is smaller than the sum of its proper divisors (2376630216).

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

1388055384 is a wasteful number, since it uses less digits than its factorization.

1388055384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27544 (or 27537 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The square root of 1388055384 is about 37256.6153052045. The cubic root of 1388055384 is about 1115.4983485535.

The spelling of 1388055384 in words is "one billion, three hundred eighty-eight million, fifty-five thousand, three hundred eighty-four".