164683969 has 2 divisors, whose sum is σ = 164683970. Its totient is φ = 164683968.

The previous prime is 164683949. The next prime is 164683973. The reversal of 164683969 is 969386461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157176369 + 7507600 = 12537^2 + 2740^2 .

It is a cyclic number.

It is not a de Polignac number, because 164683969 - 2⁹ = 164683457 is a prime.

It is a super-2 number, since 2×164683969² = 54241619291185922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (164683949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82341984 + 82341985.

It is an arithmetic number, because the mean of its divisors is an integer number (82341985).

Almost surely, 2^164683969 is an apocalyptic number.

It is an amenable number.

164683969 is a deficient number, since it is larger than the sum of its proper divisors (1).

164683969 is an equidigital number, since it uses as much as digits as its factorization.

164683969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1679616, while the sum is 52.

The square root of 164683969 is about 12832.9251926441. The cubic root of 164683969 is about 548.1302559015.

The spelling of 164683969 in words is "one hundred sixty-four million, six hundred eighty-three thousand, nine hundred sixty-nine".