164849647 has 2 divisors, whose sum is σ = 164849648. Its totient is φ = 164849646.

The previous prime is 164849621. The next prime is 164849651. The reversal of 164849647 is 746948461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164849647 - 2⁷ = 164849519 is a prime.

It is a super-2 number, since 2×164849647² = 54350812232049218, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 164849647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164849677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82424823 + 82424824.

It is an arithmetic number, because the mean of its divisors is an integer number (82424824).

Almost surely, 2^164849647 is an apocalyptic number.

164849647 is a deficient number, since it is larger than the sum of its proper divisors (1).

164849647 is an equidigital number, since it uses as much as digits as its factorization.

164849647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 49.

The square root of 164849647 is about 12839.3787622299. The cubic root of 164849647 is about 548.3140072169.

The spelling of 164849647 in words is "one hundred sixty-four million, eight hundred forty-nine thousand, six hundred forty-seven".