164041623 has 6 divisors (see below), whose sum is σ = 236949024. Its totient is φ = 109361076.

The previous prime is 164041613. The next prime is 164041637. The reversal of 164041623 is 326140461.

164041623 is a `hidden beast` number, since 1 + 640 + 4 + 16 + 2 + 3 = 666.

It is not a de Polignac number, because 164041623 - 2²² = 159847319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164041613) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9113415 + ... + 9113432.

It is an arithmetic number, because the mean of its divisors is an integer number (39491504).

Almost surely, 2^164041623 is an apocalyptic number.

164041623 is a deficient number, since it is larger than the sum of its proper divisors (72907401).

164041623 is a wasteful number, since it uses less digits than its factorization.

164041623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18226853 (or 18226850 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 164041623 is about 12807.8734768891. The cubic root of 164041623 is about 547.4166708734.

The spelling of 164041623 in words is "one hundred sixty-four million, forty-one thousand, six hundred twenty-three".