164745437 has 2 divisors, whose sum is σ = 164745438. Its totient is φ = 164745436.

The previous prime is 164745311. The next prime is 164745461. The reversal of 164745437 is 734547461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109599961 + 55145476 = 10469^2 + 7426^2 .

It is a cyclic number.

It is not a de Polignac number, because 164745437 - 2¹⁴ = 164729053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 164745394 and 164745403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164745467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82372718 + 82372719.

It is an arithmetic number, because the mean of its divisors is an integer number (82372719).

Almost surely, 2^164745437 is an apocalyptic number.

It is an amenable number.

164745437 is a deficient number, since it is larger than the sum of its proper divisors (1).

164745437 is an equidigital number, since it uses as much as digits as its factorization.

164745437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 282240, while the sum is 41.

The square root of 164745437 is about 12835.3199025190. The cubic root of 164745437 is about 548.1984436345.

The spelling of 164745437 in words is "one hundred sixty-four million, seven hundred forty-five thousand, four hundred thirty-seven".