1361341505 has 8 divisors (see below), whose sum is σ = 1644015912. Its totient is φ = 1082135808.

The previous prime is 1361341489. The next prime is 1361341523. The reversal of 1361341505 is 5051431631.

It can be written as a sum of positive squares in 4 ways, for example, as 240498064 + 1120843441 = 15508^2 + 33479^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1361341505 - 2⁴ = 1361341489 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 866312 + ... + 867881.

It is an arithmetic number, because the mean of its divisors is an integer number (205501989).

Almost surely, 2^1361341505 is an apocalyptic number.

It is an amenable number.

1361341505 is a deficient number, since it is larger than the sum of its proper divisors (282674407).

1361341505 is a wasteful number, since it uses less digits than its factorization.

1361341505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1734355.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 1361341505 is about 36896.3616770001. The cubic root of 1361341505 is about 1108.2958198370.

The spelling of 1361341505 in words is "one billion, three hundred sixty-one million, three hundred forty-one thousand, five hundred five".