8193861 has 24 divisors (see below), whose sum is σ = 12972960. Its totient is φ = 4952736.

The previous prime is 8193859. The next prime is 8193877. The reversal of 8193861 is 1683918.

8193861 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8193861 - 2¹ = 8193859 is a prime.

8193861 is a modest number, since divided by 3861 gives 819 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8193851) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6310 + ... + 7496.

It is an arithmetic number, because the mean of its divisors is an integer number (540540).

Almost surely, 2^8193861 is an apocalyptic number.

It is an amenable number.

8193861 is a deficient number, since it is larger than the sum of its proper divisors (4779099).

8193861 is a wasteful number, since it uses less digits than its factorization.

8193861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265 (or 1262 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 8193861 is about 2862.4920960590. The cubic root of 8193861 is about 201.6026318865.

The spelling of 8193861 in words is "eight million, one hundred ninety-three thousand, eight hundred sixty-one".