1359778320 has 320 divisors, whose sum is σ = 5222880000. Its totient is φ = 323149824.

The previous prime is 1359778309. The next prime is 1359778349. The reversal of 1359778320 is 238779531.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 696706 + ... + 698654.

It is an arithmetic number, because the mean of its divisors is an integer number (16321500).

Almost surely, 2^1359778320 is an apocalyptic number.

1359778320 is a gapful number since it is divisible by the number (10) 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 1359778320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2611440000).

1359778320 is an abundant number, since it is smaller than the sum of its proper divisors (3863101680).

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

1359778320 is a wasteful number, since it uses less digits than its factorization.

1359778320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2007 (or 1995 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 1359778320 is about 36875.1721351915. The cubic root of 1359778320 is about 1107.8714504601.

The spelling of 1359778320 in words is "one billion, three hundred fifty-nine million, seven hundred seventy-eight thousand, three hundred twenty".