1361941568 has 56 divisors (see below), whose sum is σ = 2916567192. Its totient is φ = 627277824.

The previous prime is 1361941561. The next prime is 1361941577. The reversal of 1361941568 is 8651491631.

It can be written as a sum of positive squares in 4 ways, for example, as 82591744 + 1279349824 = 9088^2 + 35768^2 .

It is not an unprimeable number, because it can be changed into a prime (1361941561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478646 + ... + 481482.

It is an arithmetic number, because the mean of its divisors is an integer number (52081557).

Almost surely, 2^1361941568 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 1361941568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1458283596).

1361941568 is an abundant number, since it is smaller than the sum of its proper divisors (1554625624).

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

1361941568 is a wasteful number, since it uses less digits than its factorization.

1361941568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3439 (or 3429 counting only the distinct ones).

The product of its digits is 155520, while the sum is 44.

The square root of 1361941568 is about 36904.4925178494. The cubic root of 1361941568 is about 1108.4586370828.

The spelling of 1361941568 in words is "one billion, three hundred sixty-one million, nine hundred forty-one thousand, five hundred sixty-eight".