1361033543 has 4 divisors (see below), whose sum is σ = 1361814360. Its totient is φ = 1360252728.

The previous prime is 1361033459. The next prime is 1361033563. The reversal of 1361033543 is 3453301631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3453301631 = 13 ⋅265638587.

It is a cyclic number.

It is not a de Polignac number, because 1361033543 - 2¹⁴ = 1361017159 is a prime.

It is a super-2 number, since 2×1361033543² = 3704824610342265698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361033563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387788 + ... + 391281.

It is an arithmetic number, because the mean of its divisors is an integer number (340453590).

Almost surely, 2^1361033543 is an apocalyptic number.

1361033543 is a deficient number, since it is larger than the sum of its proper divisors (780817).

1361033543 is an equidigital number, since it uses as much as digits as its factorization.

1361033543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780816.

The product of its (nonzero) digits is 9720, while the sum is 29.

The square root of 1361033543 is about 36892.1881026322. The cubic root of 1361033543 is about 1108.2122408240.

The spelling of 1361033543 in words is "one billion, three hundred sixty-one million, thirty-three thousand, five hundred forty-three".