164123745 has 16 divisors (see below), whose sum is σ = 274015872. Its totient is φ = 83726720.

The previous prime is 164123717. The next prime is 164123747. The reversal of 164123745 is 547321461.

It is not a de Polignac number, because 164123745 - 2⁶ = 164123681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164123747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237516 + ... + 238205.

It is an arithmetic number, because the mean of its divisors is an integer number (17125992).

Almost surely, 2^164123745 is an apocalyptic number.

164123745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164123745 is a deficient number, since it is larger than the sum of its proper divisors (109892127).

164123745 is a wasteful number, since it uses less digits than its factorization.

164123745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475752.

The product of its digits is 20160, while the sum is 33.

The square root of 164123745 is about 12811.0789943705. The cubic root of 164123745 is about 547.5080043032.

The spelling of 164123745 in words is "one hundred sixty-four million, one hundred twenty-three thousand, seven hundred forty-five".