164440633 has 16 divisors (see below), whose sum is σ = 192225280. Its totient is φ = 137766096.

The previous prime is 164440631. The next prime is 164440637. The reversal of 164440633 is 336044461.

It is a happy number.

164440633 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 164440633 - 2¹ = 164440631 is a prime.

It is a super-3 number, since 3×164440633³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164440595 and 164440604.

It is not an unprimeable number, because it can be changed into a prime (164440631) 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, 55516 + ... + 58402.

It is an arithmetic number, because the mean of its divisors is an integer number (12014080).

Almost surely, 2^164440633 is an apocalyptic number.

It is an amenable number.

164440633 is a deficient number, since it is larger than the sum of its proper divisors (27784647).

164440633 is a wasteful number, since it uses less digits than its factorization.

164440633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3076.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 164440633 is about 12823.4407629154. The cubic root of 164440633 is about 547.8601515465.

The spelling of 164440633 in words is "one hundred sixty-four million, four hundred forty thousand, six hundred thirty-three".