164091836646 has 24 divisors (see below), whose sum is σ = 358794081360. Its totient is φ = 54195468336.

The previous prime is 164091836641. The next prime is 164091836717. The reversal of 164091836646 is 646638190461.

164091836646 is a `hidden beast` number, since 16 + 409 + 183 + 6 + 6 + 46 = 666.

164091836646 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×164091836646² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 164091836592 and 164091836601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164091836641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41815530 + ... + 41819453.

It is an arithmetic number, because the mean of its divisors is an integer number (14949753390).

Almost surely, 2^164091836646 is an apocalyptic number.

164091836646 is an abundant number, since it is smaller than the sum of its proper divisors (194702244714).

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

164091836646 is a wasteful number, since it uses less digits than its factorization.

164091836646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83635100 (or 83635097 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 54.

The spelling of 164091836646 in words is "one hundred sixty-four billion, ninety-one million, eight hundred thirty-six thousand, six hundred forty-six".