1803806781116 has 12 divisors (see below), whose sum is σ = 3172524490800. Its totient is φ = 897371212320.

The previous prime is 1803806781113. The next prime is 1803806781137. The reversal of 1803806781116 is 6111876083081.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1803806781113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1133043665 + ... + 1133045256.

It is an arithmetic number, because the mean of its divisors is an integer number (264377040900).

Almost surely, 2^{1803806781116} is an apocalyptic number.

It is an amenable number.

1803806781116 is a deficient number, since it is larger than the sum of its proper divisors (1368717709684).

1803806781116 is a wasteful number, since it uses less digits than its factorization.

1803806781116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266089124 (or 2266089122 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 50.

The spelling of 1803806781116 in words is "one trillion, eight hundred three billion, eight hundred six million, seven hundred eighty-one thousand, one hundred sixteen".