1388361768 has 32 divisors (see below), whose sum is σ = 3653584800. Its totient is φ = 438429888.

The previous prime is 1388361743. The next prime is 1388361817. The reversal of 1388361768 is 8671638831.

It is a self number, because there is not a number n which added to its sum of digits gives 1388361768.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1521871 + ... + 1522782.

It is an arithmetic number, because the mean of its divisors is an integer number (114174525).

Almost surely, 2^1388361768 is an apocalyptic number.

It is an amenable number.

1388361768 is an abundant number, since it is smaller than the sum of its proper divisors (2265223032).

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

1388361768 is a wasteful number, since it uses less digits than its factorization.

1388361768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3044681 (or 3044677 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 51.

The square root of 1388361768 is about 37260.7268850193. The cubic root of 1388361768 is about 1115.5804167732.

The spelling of 1388361768 in words is "one billion, three hundred eighty-eight million, three hundred sixty-one thousand, seven hundred sixty-eight".