164590535 has 4 divisors (see below), whose sum is σ = 197508648. Its totient is φ = 131672424.

The previous prime is 164590519. The next prime is 164590537. The reversal of 164590535 is 535095461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 535095461 = 19 ⋅28162919.

It is a cyclic number.

It is not a de Polignac number, because 164590535 - 2⁴ = 164590519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164590537) 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, 16459049 + ... + 16459058.

It is an arithmetic number, because the mean of its divisors is an integer number (49377162).

Almost surely, 2^164590535 is an apocalyptic number.

164590535 is a deficient number, since it is larger than the sum of its proper divisors (32918113).

164590535 is an equidigital number, since it uses as much as digits as its factorization.

164590535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32918112.

The product of its (nonzero) digits is 81000, while the sum is 38.

The square root of 164590535 is about 12829.2842746585. The cubic root of 164590535 is about 548.0265751138.

The spelling of 164590535 in words is "one hundred sixty-four million, five hundred ninety thousand, five hundred thirty-five".