164653437 has 8 divisors (see below), whose sum is σ = 236425504. Its totient is φ = 101325168.

The previous prime is 164653421. The next prime is 164653439. The reversal of 164653437 is 734356461.

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

It is not a de Polignac number, because 164653437 - 2⁴ = 164653421 is a prime.

It is a super-3 number, since 3×164653437³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 4221883 = 164653437 / (1 + 6 + 4 + 6 + 5 + 3 + 4 + 3 + 7).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164653395 and 164653404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164653439) 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, 2110903 + ... + 2110980.

It is an arithmetic number, because the mean of its divisors is an integer number (29553188).

Almost surely, 2^164653437 is an apocalyptic number.

It is an amenable number.

164653437 is a deficient number, since it is larger than the sum of its proper divisors (71772067).

164653437 is a wasteful number, since it uses less digits than its factorization.

164653437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4221899.

The product of its digits is 181440, while the sum is 39.

The square root of 164653437 is about 12831.7355412275. The cubic root of 164653437 is about 548.0963798105.

The spelling of 164653437 in words is "one hundred sixty-four million, six hundred fifty-three thousand, four hundred thirty-seven".