164638305108 has 60 divisors (see below), whose sum is σ = 444280853632. Its totient is φ = 53109127440.

The previous prime is 164638305101. The next prime is 164638305157. The reversal of 164638305108 is 801503836461.

164638305108 is a `hidden beast` number, since 1 + 6 + 4 + 638 + 3 + 0 + 5 + 1 + 0 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164638305101) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8185810 + ... + 8205897.

Almost surely, 2^164638305108 is an apocalyptic number.

164638305108 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

164638305108 is an abundant number, since it is smaller than the sum of its proper divisors (279642548524).

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

164638305108 is a wasteful number, since it uses less digits than its factorization.

164638305108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16391754 (or 16391743 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 164638305108 in words is "one hundred sixty-four billion, six hundred thirty-eight million, three hundred five thousand, one hundred eight".