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169448143 is a prime number
BaseRepresentation
bin10100001100110…
…01001011001111
3102210211212011011
422012121023033
5321334320033
624451510051
74125166624
oct1206311317
9383755134
10169448143
1187715997
12488b8327
132914b097
141870c34b
15ed21ccd
hexa1992cf

169448143 has 2 divisors, whose sum is σ = 169448144. Its totient is φ = 169448142.

The previous prime is 169448141. The next prime is 169448161. The reversal of 169448143 is 341844961.

169448143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 169448143 - 21 = 169448141 is a prime.

It is a super-2 number, since 2×1694481432 = 57425346332296898, which contains 22 as substring.

Together with 169448141, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 169448096 and 169448105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (169448141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84724071 + 84724072.

It is an arithmetic number, because the mean of its divisors is an integer number (84724072).

Almost surely, 2169448143 is an apocalyptic number.

169448143 is a deficient number, since it is larger than the sum of its proper divisors (1).

169448143 is an equidigital number, since it uses as much as digits as its factorization.

169448143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 40.

The square root of 169448143 is about 13017.2248578566. The cubic root of 169448143 is about 553.3657446620.

The spelling of 169448143 in words is "one hundred sixty-nine million, four hundred forty-eight thousand, one hundred forty-three".