164161223 has 2 divisors, whose sum is σ = 164161224. Its totient is φ = 164161222.

The previous prime is 164161183. The next prime is 164161243. The reversal of 164161223 is 322161461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164161223 - 2¹² = 164157127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 164161192 and 164161201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164161243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82080611 + 82080612.

It is an arithmetic number, because the mean of its divisors is an integer number (82080612).

Almost surely, 2^164161223 is an apocalyptic number.

164161223 is a deficient number, since it is larger than the sum of its proper divisors (1).

164161223 is an equidigital number, since it uses as much as digits as its factorization.

164161223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 26.

The square root of 164161223 is about 12812.5416292007. The cubic root of 164161223 is about 547.5496759969.

The spelling of 164161223 in words is "one hundred sixty-four million, one hundred sixty-one thousand, two hundred twenty-three".