164043249 has 4 divisors (see below), whose sum is σ = 218724336. Its totient is φ = 109362164.

The previous prime is 164043239. The next prime is 164043293. The reversal of 164043249 is 942340461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 164043249 - 2¹² = 164039153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164043239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27340539 + ... + 27340544.

It is an arithmetic number, because the mean of its divisors is an integer number (54681084).

Almost surely, 2^164043249 is an apocalyptic number.

It is an amenable number.

164043249 is a deficient number, since it is larger than the sum of its proper divisors (54681087).

164043249 is an equidigital number, since it uses as much as digits as its factorization.

164043249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54681086.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 164043249 is about 12807.9369533114. The cubic root of 164043249 is about 547.4184795537.

The spelling of 164043249 in words is "one hundred sixty-four million, forty-three thousand, two hundred forty-nine".