861834196 has 24 divisors (see below), whose sum is σ = 1575169344. Its totient is φ = 411818880.

The previous prime is 861834191. The next prime is 861834263. The reversal of 861834196 is 691438168.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861834191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121771 + ... + 128653.

It is an arithmetic number, because the mean of its divisors is an integer number (65632056).

Almost surely, 2^861834196 is an apocalyptic number.

It is an amenable number.

861834196 is a deficient number, since it is larger than the sum of its proper divisors (713335148).

861834196 is a wasteful number, since it uses less digits than its factorization.

861834196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8271 (or 8269 counting only the distinct ones).

The product of its digits is 248832, while the sum is 46.

The square root of 861834196 is about 29357.0127226869. The cubic root of 861834196 is about 951.6441320482.

The spelling of 861834196 in words is "eight hundred sixty-one million, eight hundred thirty-four thousand, one hundred ninety-six".