164723437 has 2 divisors, whose sum is σ = 164723438. Its totient is φ = 164723436.

The previous prime is 164723431. The next prime is 164723467. The reversal of 164723437 is 734327461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164711556 + 11881 = 12834^2 + 109^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164723437 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 164723396 and 164723405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164723431) 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 as a sum of consecutive naturals, namely, 82361718 + 82361719.

It is an arithmetic number, because the mean of its divisors is an integer number (82361719).

Almost surely, 2^164723437 is an apocalyptic number.

It is an amenable number.

164723437 is a deficient number, since it is larger than the sum of its proper divisors (1).

164723437 is an equidigital number, since it uses as much as digits as its factorization.

164723437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 37.

The square root of 164723437 is about 12834.4628637119. The cubic root of 164723437 is about 548.1740405254.

The spelling of 164723437 in words is "one hundred sixty-four million, seven hundred twenty-three thousand, four hundred thirty-seven".