164441537 has 4 divisors (see below), whose sum is σ = 177090900. Its totient is φ = 151792176.

The previous prime is 164441533. The next prime is 164441573. The reversal of 164441537 is 735144461.

164441537 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 an emirpimes, since its reverse is a distinct semiprime: 735144461 = 29 ⋅25349809.

It can be written as a sum of positive squares in 2 ways, for example, as 32444416 + 131997121 = 5696^2 + 11489^2 .

It is a cyclic number.

It is not a de Polignac number, because 164441537 - 2² = 164441533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164441497 and 164441506.

It is not an unprimeable number, because it can be changed into a prime (164441533) 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, 6324662 + ... + 6324687.

It is an arithmetic number, because the mean of its divisors is an integer number (44272725).

Almost surely, 2^164441537 is an apocalyptic number.

It is an amenable number.

164441537 is a deficient number, since it is larger than the sum of its proper divisors (12649363).

164441537 is a wasteful number, since it uses less digits than its factorization.

164441537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12649362.

The product of its digits is 40320, while the sum is 35.

The square root of 164441537 is about 12823.4760108170. The cubic root of 164441537 is about 547.8611554846.

Adding to 164441537 its reverse (735144461), we get a palindrome (899585998).

The spelling of 164441537 in words is "one hundred sixty-four million, four hundred forty-one thousand, five hundred thirty-seven".