1368121368 has 128 divisors (see below), whose sum is σ = 3601382400. Its totient is φ = 432746496.

The previous prime is 1368121331. The next prime is 1368121373. The reversal of 1368121368 is 8631218631.

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 31 ways as a sum of consecutive naturals, for example, 7908130 + ... + 7908302.

It is an arithmetic number, because the mean of its divisors is an integer number (28135800).

Almost surely, 2^1368121368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1368121368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1800691200).

1368121368 is an abundant number, since it is smaller than the sum of its proper divisors (2233261032).

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

1368121368 is a wasteful number, since it uses less digits than its factorization.

1368121368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401 (or 397 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 1368121368 is about 36988.1246888782. The cubic root of 1368121368 is about 1110.1326487039.

Adding to 1368121368 its reverse (8631218631), we get a palindrome (9999339999).

The spelling of 1368121368 in words is "one billion, three hundred sixty-eight million, one hundred twenty-one thousand, three hundred sixty-eight".