164543629 has 16 divisors (see below), whose sum is σ = 189319680. Its totient is φ = 141972480.

The previous prime is 164543623. The next prime is 164543647. The reversal of 164543629 is 926345461.

It is a cyclic number.

It is not a de Polignac number, because 164543629 - 2⁹ = 164543117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164543591 and 164543600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164543623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1797 + ... + 18229.

It is an arithmetic number, because the mean of its divisors is an integer number (11832480).

Almost surely, 2^164543629 is an apocalyptic number.

164543629 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

164543629 is a deficient number, since it is larger than the sum of its proper divisors (24776051).

164543629 is a wasteful number, since it uses less digits than its factorization.

164543629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16500.

The product of its digits is 155520, while the sum is 40.

The square root of 164543629 is about 12827.4560611214. The cubic root of 164543629 is about 547.9745101984.

The spelling of 164543629 in words is "one hundred sixty-four million, five hundred forty-three thousand, six hundred twenty-nine".