164432453 has 4 divisors (see below), whose sum is σ = 164580780. Its totient is φ = 164284128.

The previous prime is 164432431. The next prime is 164432459. The reversal of 164432453 is 354234461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 76860289 + 87572164 = 8767^2 + 9358^2 .

It is a cyclic number.

It is not a de Polignac number, because 164432453 - 2⁸ = 164432197 is a prime.

It is a super-3 number, since 3×164432453³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164432459) 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, 72488 + ... + 74721.

It is an arithmetic number, because the mean of its divisors is an integer number (41145195).

Almost surely, 2^164432453 is an apocalyptic number.

It is an amenable number.

164432453 is a deficient number, since it is larger than the sum of its proper divisors (148327).

164432453 is a wasteful number, since it uses less digits than its factorization.

164432453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148326.

The product of its digits is 34560, while the sum is 32.

The square root of 164432453 is about 12823.1218117898. The cubic root of 164432453 is about 547.8510670717.

The spelling of 164432453 in words is "one hundred sixty-four million, four hundred thirty-two thousand, four hundred fifty-three".