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166130143 = 5313672293
BaseRepresentation
bin10011110011011…
…11000111011111
3102120121021201021
421321233013133
5320012131033
624252425011
74055040304
oct1171570737
9376537637
10166130143
118585a043
1247778167
1328558a7a
14180c70ab
15e8b8b2d
hex9e6f1df

166130143 has 8 divisors (see below), whose sum is σ = 169462368. Its totient is φ = 162805344.

The previous prime is 166130119. The next prime is 166130149. The reversal of 166130143 is 341031661.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166130143 - 221 = 164032991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166130149) 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 in 7 ways as a sum of consecutive naturals, for example, 71305 + ... + 73597.

It is an arithmetic number, because the mean of its divisors is an integer number (21182796).

Almost surely, 2166130143 is an apocalyptic number.

166130143 is a deficient number, since it is larger than the sum of its proper divisors (3332225).

166130143 is a wasteful number, since it uses less digits than its factorization.

166130143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3713.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 166130143 is about 12889.1482651105. The cubic root of 166130143 is about 549.7300526519.

The spelling of 166130143 in words is "one hundred sixty-six million, one hundred thirty thousand, one hundred forty-three".

Divisors: 1 53 1367 2293 72451 121529 3134531 166130143