164429291 has 8 divisors (see below), whose sum is σ = 181196400. Its totient is φ = 148250592.

The previous prime is 164429263. The next prime is 164429327. The reversal of 164429291 is 192924461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164429291 is a prime.

It is a super-3 number, since 3×164429291³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164429201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146516 + ... + 147633.

It is an arithmetic number, because the mean of its divisors is an integer number (22649550).

Almost surely, 2^164429291 is an apocalyptic number.

164429291 is a deficient number, since it is larger than the sum of its proper divisors (16767109).

164429291 is a wasteful number, since it uses less digits than its factorization.

164429291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294205.

The product of its digits is 31104, while the sum is 38.

The square root of 164429291 is about 12822.9985182874. The cubic root of 164429291 is about 547.8475553639.

Adding to 164429291 its sum of digits (38), we get a square (164429329 = 12823²).

The spelling of 164429291 in words is "one hundred sixty-four million, four hundred twenty-nine thousand, two hundred ninety-one".