1361820361809 has 8 divisors (see below), whose sum is σ = 1878372912960. Its totient is φ = 876574025936.

The previous prime is 1361820361757. The next prime is 1361820361817. The reversal of 1361820361809 is 9081630281631.

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 1361820361809 - 2¹¹ = 1361820359761 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1361820361829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7826553717 + ... + 7826553890.

It is an arithmetic number, because the mean of its divisors is an integer number (234796614120).

Almost surely, 2^{1361820361809} is an apocalyptic number.

It is an amenable number.

1361820361809 is a deficient number, since it is larger than the sum of its proper divisors (516552551151).

1361820361809 is a wasteful number, since it uses less digits than its factorization.

1361820361809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15653107639.

The product of its (nonzero) digits is 373248, while the sum is 48.

The spelling of 1361820361809 in words is "one trillion, three hundred sixty-one billion, eight hundred twenty million, three hundred sixty-one thousand, eight hundred nine".