164430437 has 8 divisors (see below), whose sum is σ = 166584600. Its totient is φ = 162283264.

The previous prime is 164430421. The next prime is 164430439. The reversal of 164430437 is 734034461.

It can be written as a sum of positive squares in 4 ways, for example, as 97337956 + 67092481 = 9866^2 + 8191^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 164430437 - 2⁴ = 164430421 is a prime.

It is a super-3 number, since 3×164430437³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164430439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58889 + ... + 61617.

It is an arithmetic number, because the mean of its divisors is an integer number (20823075).

Almost surely, 2^164430437 is an apocalyptic number.

It is an amenable number.

164430437 is a deficient number, since it is larger than the sum of its proper divisors (2154163).

164430437 is an equidigital number, since it uses as much as digits as its factorization.

164430437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3495.

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 164430437 is about 12823.0432035457. The cubic root of 164430437 is about 547.8488281133.

Adding to 164430437 its reverse (734034461), we get a palindrome (898464898).

The spelling of 164430437 in words is "one hundred sixty-four million, four hundred thirty thousand, four hundred thirty-seven".