164623249 has 16 divisors (see below), whose sum is σ = 195895168. Its totient is φ = 135395712.

The previous prime is 164623231. The next prime is 164623253. The reversal of 164623249 is 942326461.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 164623249 - 2²⁷ = 30405521 is a prime.

It is a super-2 number, since 2×164623249² = 54201628222632002, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (164623229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14554 + ... + 23260.

It is an arithmetic number, because the mean of its divisors is an integer number (12243448).

Almost surely, 2^164623249 is an apocalyptic number.

It is an amenable number.

164623249 is a deficient number, since it is larger than the sum of its proper divisors (31271919).

164623249 is an equidigital number, since it uses as much as digits as its factorization.

164623249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8824.

The product of its digits is 62208, while the sum is 37.

The square root of 164623249 is about 12830.5591850083. The cubic root of 164623249 is about 548.0628812795.

The spelling of 164623249 in words is "one hundred sixty-four million, six hundred twenty-three thousand, two hundred forty-nine".