1803963432961 has 8 divisors (see below), whose sum is σ = 1865903929344. Its totient is φ = 1742877288480.

The previous prime is 1803963432937. The next prime is 1803963433001. The reversal of 1803963432961 is 1692343693081.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1803963432961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1803963432461) 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, 213583681 + ... + 213592126.

It is an arithmetic number, because the mean of its divisors is an integer number (233237991168).

Almost surely, 2^{1803963432961} is an apocalyptic number.

It is an amenable number.

1803963432961 is a deficient number, since it is larger than the sum of its proper divisors (61940496383).

1803963432961 is a wasteful number, since it uses less digits than its factorization.

1803963432961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427175951.

The product of its (nonzero) digits is 5038848, while the sum is 55.

The spelling of 1803963432961 in words is "one trillion, eight hundred three billion, nine hundred sixty-three million, four hundred thirty-two thousand, nine hundred sixty-one".