164253437 has 2 divisors, whose sum is σ = 164253438. Its totient is φ = 164253436.

The previous prime is 164253409. The next prime is 164253449. The reversal of 164253437 is 734352461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162460516 + 1792921 = 12746^2 + 1339^2 .

It is a cyclic number.

It is not a de Polignac number, because 164253437 - 2⁸ = 164253181 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 164253397 and 164253406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164253497) 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, 82126718 + 82126719.

It is an arithmetic number, because the mean of its divisors is an integer number (82126719).

Almost surely, 2^164253437 is an apocalyptic number.

It is an amenable number.

164253437 is a deficient number, since it is larger than the sum of its proper divisors (1).

164253437 is an equidigital number, since it uses as much as digits as its factorization.

164253437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 35.

The square root of 164253437 is about 12816.1397074158. The cubic root of 164253437 is about 547.6521815169.

The spelling of 164253437 in words is "one hundred sixty-four million, two hundred fifty-three thousand, four hundred thirty-seven".