164684493 has 12 divisors (see below), whose sum is σ = 245551488. Its totient is φ = 106247880.

The previous prime is 164684477. The next prime is 164684497. The reversal of 164684493 is 394486461.

164684493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 164684493 - 2⁴ = 164684477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164684497) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 294855 + ... + 295412.

It is an arithmetic number, because the mean of its divisors is an integer number (20462624).

Almost surely, 2^164684493 is an apocalyptic number.

It is an amenable number.

164684493 is a deficient number, since it is larger than the sum of its proper divisors (80866995).

164684493 is a wasteful number, since it uses less digits than its factorization.

164684493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590304 (or 590301 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 164684493 is about 12832.9456088616. The cubic root of 164684493 is about 548.1308372573.

The spelling of 164684493 in words is "one hundred sixty-four million, six hundred eighty-four thousand, four hundred ninety-three".