164426137 has 2 divisors, whose sum is σ = 164426138. Its totient is φ = 164426136.

The previous prime is 164426117. The next prime is 164426161. The reversal of 164426137 is 731624461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93006736 + 71419401 = 9644^2 + 8451^2 .

It is a cyclic number.

It is not a de Polignac number, because 164426137 - 2¹⁹ = 163901849 is a prime.

It is a super-3 number, since 3×164426137³ (a number of 26 digits) contains 333 as substring.

It is equal to p_9208645 and since 164426137 and 9208645 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (164426117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82213068 + 82213069.

It is an arithmetic number, because the mean of its divisors is an integer number (82213069).

Almost surely, 2^164426137 is an apocalyptic number.

It is an amenable number.

164426137 is a deficient number, since it is larger than the sum of its proper divisors (1).

164426137 is an equidigital number, since it uses as much as digits as its factorization.

164426137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 34.

The square root of 164426137 is about 12822.8755355419. The cubic root of 164426137 is about 547.8440524961.

The spelling of 164426137 in words is "one hundred sixty-four million, four hundred twenty-six thousand, one hundred thirty-seven".