164204537 has 6 divisors (see below), whose sum is σ = 191013498. Its totient is φ = 140746704.

The previous prime is 164204533. The next prime is 164204543. The reversal of 164204537 is 735402461.

It can be written as a sum of positive squares in only one way, i.e., 133079296 + 31125241 = 11536^2 + 5579^2 .

It is not a de Polignac number, because 164204537 - 2² = 164204533 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164204531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1675508 + ... + 1675605.

It is an arithmetic number, because the mean of its divisors is an integer number (31835583).

Almost surely, 2^164204537 is an apocalyptic number.

It is an amenable number.

164204537 is a deficient number, since it is larger than the sum of its proper divisors (26808961).

164204537 is an equidigital number, since it uses as much as digits as its factorization.

164204537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3351127 (or 3351120 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 164204537 is about 12814.2318146661. The cubic root of 164204537 is about 547.5978288243.

Adding to 164204537 its reverse (735402461), we get a palindrome (899606998).

The spelling of 164204537 in words is "one hundred sixty-four million, two hundred four thousand, five hundred thirty-seven".