1368009216 has 320 divisors, whose sum is σ = 4719221760. Its totient is φ = 383201280.

The previous prime is 1368009133. The next prime is 1368009277. The reversal of 1368009216 is 6129008631.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 6483351 + ... + 6483561.

It is an arithmetic number, because the mean of its divisors is an integer number (14747568).

Almost surely, 2^1368009216 is an apocalyptic number.

1368009216 is a gapful number since it is divisible by the number (16) 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 1368009216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2359610880).

1368009216 is an abundant number, since it is smaller than the sum of its proper divisors (3351212544).

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

1368009216 is an equidigital number, since it uses as much as digits as its factorization.

1368009216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312 (or 290 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 1368009216 is about 36986.6086036555. The cubic root of 1368009216 is about 1110.1023134324.

The spelling of 1368009216 in words is "one billion, three hundred sixty-eight million, nine thousand, two hundred sixteen".