164243433 has 16 divisors (see below), whose sum is σ = 223292160. Its totient is φ = 107355216.

The previous prime is 164243423. The next prime is 164243459. The reversal of 164243433 is 334342461.

It is not a de Polignac number, because 164243433 - 2²² = 160049129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 164243433.

It is not an unprimeable number, because it can be changed into a prime (164243423) 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, 81666 + ... + 83652.

It is an arithmetic number, because the mean of its divisors is an integer number (13955760).

Almost surely, 2^164243433 is an apocalyptic number.

It is an amenable number.

164243433 is a deficient number, since it is larger than the sum of its proper divisors (59048727).

164243433 is a wasteful number, since it uses less digits than its factorization.

164243433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2516.

The product of its digits is 20736, while the sum is 30.

The square root of 164243433 is about 12815.7494123442. The cubic root of 164243433 is about 547.6410628786.

Adding to 164243433 its reverse (334342461), we get a palindrome (498585894).

The spelling of 164243433 in words is "one hundred sixty-four million, two hundred forty-three thousand, four hundred thirty-three".