164033643 has 8 divisors (see below), whose sum is σ = 221792256. Its totient is φ = 107815400.

The previous prime is 164033641. The next prime is 164033659. The reversal of 164033643 is 346330461.

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

It is a cyclic number.

It is not a de Polignac number, because 164033643 - 2¹ = 164033641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 164033643.

It is not an unprimeable number, because it can be changed into a prime (164033641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384843 + ... + 385268.

It is an arithmetic number, because the mean of its divisors is an integer number (27724032).

Almost surely, 2^164033643 is an apocalyptic number.

164033643 is a deficient number, since it is larger than the sum of its proper divisors (57758613).

164033643 is an equidigital number, since it uses as much as digits as its factorization.

164033643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770185.

The product of its (nonzero) digits is 15552, while the sum is 30.

The square root of 164033643 is about 12807.5619459755. The cubic root of 164033643 is about 547.4077941510.

The spelling of 164033643 in words is "one hundred sixty-four million, thirty-three thousand, six hundred forty-three".