164956123 has 2 divisors, whose sum is σ = 164956124. Its totient is φ = 164956122.

The previous prime is 164956097. The next prime is 164956159. The reversal of 164956123 is 321659461.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164956123 is a prime.

It is a super-2 number, since 2×164956123² = 54421045030382258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (164956223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82478061 + 82478062.

It is an arithmetic number, because the mean of its divisors is an integer number (82478062).

Almost surely, 2^164956123 is an apocalyptic number.

164956123 is a deficient number, since it is larger than the sum of its proper divisors (1).

164956123 is an equidigital number, since it uses as much as digits as its factorization.

164956123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 37.

The square root of 164956123 is about 12843.5245551990. The cubic root of 164956123 is about 548.4320333863.

The spelling of 164956123 in words is "one hundred sixty-four million, nine hundred fifty-six thousand, one hundred twenty-three".