164009394 has 32 divisors (see below), whose sum is σ = 364962240. Its totient is φ = 54595296.

The previous prime is 164009369. The next prime is 164009407. The reversal of 164009394 is 493900461.

164009394 is a `hidden beast` number, since 1 + 640 + 0 + 9 + 3 + 9 + 4 = 666.

164009394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49869 + ... + 53055.

It is an arithmetic number, because the mean of its divisors is an integer number (11405070).

Almost surely, 2^164009394 is an apocalyptic number.

164009394 is an abundant number, since it is smaller than the sum of its proper divisors (200952846).

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

164009394 is a wasteful number, since it uses less digits than its factorization.

164009394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4151 (or 4145 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 164009394 is about 12806.6152436934. The cubic root of 164009394 is about 547.3808184942.

The spelling of 164009394 in words is "one hundred sixty-four million, nine thousand, three hundred ninety-four".