1803946077791 has 48 divisors (see below), whose sum is σ = 2208322228224. Its totient is φ = 1462268808000.

The previous prime is 1803946077779. The next prime is 1803946077851. The reversal of 1803946077791 is 1977706493081.

It is a de Polignac number, because none of the positive numbers 2^k-1803946077791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1803946077721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26639546 + ... + 26707176.

It is an arithmetic number, because the mean of its divisors is an integer number (46006713088).

Almost surely, 2^{1803946077791} is an apocalyptic number.

1803946077791 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1803946077791 is a deficient number, since it is larger than the sum of its proper divisors (404376150433).

1803946077791 is a wasteful number, since it uses less digits than its factorization.

1803946077791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68244 (or 68233 counting only the distinct ones).

The product of its (nonzero) digits is 16003008, while the sum is 62.

The spelling of 1803946077791 in words is "one trillion, eight hundred three billion, nine hundred forty-six million, seventy-seven thousand, seven hundred ninety-one".