164137429 has 4 divisors (see below), whose sum is σ = 164988076. Its totient is φ = 163286784.

The previous prime is 164137417. The next prime is 164137433. The reversal of 164137429 is 924731461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24850225 + 139287204 = 4985^2 + 11802^2 .

It is a cyclic number.

It is not a de Polignac number, because 164137429 - 2¹⁷ = 164006357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164107429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425034 + ... + 425419.

It is an arithmetic number, because the mean of its divisors is an integer number (41247019).

Almost surely, 2^164137429 is an apocalyptic number.

It is an amenable number.

164137429 is a deficient number, since it is larger than the sum of its proper divisors (850647).

164137429 is an equidigital number, since it uses as much as digits as its factorization.

164137429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850646.

The product of its digits is 36288, while the sum is 37.

The square root of 164137429 is about 12811.6130522273. The cubic root of 164137429 is about 547.5232202435.

The spelling of 164137429 in words is "one hundred sixty-four million, one hundred thirty-seven thousand, four hundred twenty-nine".