1369218816 has 180 divisors, whose sum is σ = 4666509232. Its totient is φ = 391163904.

The previous prime is 1369218791. The next prime is 1369218833. The reversal of 1369218816 is 6188129631.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 140436 + ... + 149868.

Almost surely, 2^1369218816 is an apocalyptic number.

1369218816 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 1369218816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2333254616).

1369218816 is an abundant number, since it is smaller than the sum of its proper divisors (3297290416).

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

1369218816 is an frugal number, since it uses more digits than its factorization.

1369218816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9468 (or 9445 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 1369218816 is about 37002.9568548245. The cubic root of 1369218816 is about 1110.4294028928.

The spelling of 1369218816 in words is "one billion, three hundred sixty-nine million, two hundred eighteen thousand, eight hundred sixteen".