1388161368 has 96 divisors (see below), whose sum is σ = 4238497200. Its totient is φ = 420647040.

The previous prime is 1388161283. The next prime is 1388161373. The reversal of 1388161368 is 8631618831.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 421 + ... + 52692.

Almost surely, 2^1388161368 is an apocalyptic number.

1388161368 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1388161368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2119248600).

1388161368 is an abundant number, since it is smaller than the sum of its proper divisors (2850335832).

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

1388161368 is a wasteful number, since it uses less digits than its factorization.

1388161368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53150 (or 53129 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 1388161368 is about 37258.0376294834. The cubic root of 1388161368 is about 1115.5267388635.

The spelling of 1388161368 in words is "one billion, three hundred eighty-eight million, one hundred sixty-one thousand, three hundred sixty-eight".