1793311899861 has 8 divisors (see below), whose sum is σ = 2391197522560. Its totient is φ = 1195483771872.

The previous prime is 1793311899803. The next prime is 1793311899889. The reversal of 1793311899861 is 1689981133971.

It is a happy number.

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

It is not a de Polignac number, because 1793311899861 - 2⁷ = 1793311899733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1793311899792 and 1793311899801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1793311899061) 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, 14300845 + ... + 14425698.

It is an arithmetic number, because the mean of its divisors is an integer number (298899690320).

Almost surely, 2^{1793311899861} is an apocalyptic number.

It is an amenable number.

1793311899861 is a deficient number, since it is larger than the sum of its proper divisors (597885622699).

1793311899861 is a wasteful number, since it uses less digits than its factorization.

1793311899861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28747355.

The product of its digits is 17635968, while the sum is 66.

The spelling of 1793311899861 in words is "one trillion, seven hundred ninety-three billion, three hundred eleven million, eight hundred ninety-nine thousand, eight hundred sixty-one".