164149073 has 4 divisors (see below), whose sum is σ = 179071728. Its totient is φ = 149226420.

The previous prime is 164149067. The next prime is 164149121. The reversal of 164149073 is 370941461.

164149073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 370941461 = 11 ⋅33721951.

It is a cyclic number.

It is not a de Polignac number, because 164149073 - 2²⁴ = 147371857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164149273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7461311 + ... + 7461332.

It is an arithmetic number, because the mean of its divisors is an integer number (44767932).

Almost surely, 2^164149073 is an apocalyptic number.

It is an amenable number.

164149073 is a deficient number, since it is larger than the sum of its proper divisors (14922655).

164149073 is a wasteful number, since it uses less digits than its factorization.

164149073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14922654.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 164149073 is about 12812.0674756263. The cubic root of 164149073 is about 547.5361671374.

The spelling of 164149073 in words is "one hundred sixty-four million, one hundred forty-nine thousand, seventy-three".