646424196186 has 8 divisors (see below), whose sum is σ = 1292848392384. Its totient is φ = 215474732060.

The previous prime is 646424196157. The next prime is 646424196247. The reversal of 646424196186 is 681691424646.

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

646424196186 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53868683010 + ... + 53868683021.

It is an arithmetic number, because the mean of its divisors is an integer number (161606049048).

Almost surely, 2^646424196186 is an apocalyptic number.

646424196186 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

646424196186 is a wasteful number, since it uses less digits than its factorization.

646424196186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107737366036.

The product of its digits is 11943936, while the sum is 57.

The spelling of 646424196186 in words is "six hundred forty-six billion, four hundred twenty-four million, one hundred ninety-six thousand, one hundred eighty-six".