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164174953 = 198640787
BaseRepresentation
bin10011100100100…
…01110001101001
3102102220221200211
421302101301221
5314012044303
624142501121
74032315115
oct1162216151
9372827624
10164174953
1184744088
1246b947a1
1328022b57
1417b38745
15e62e66d
hex9c91c69

164174953 has 4 divisors (see below), whose sum is σ = 172815760. Its totient is φ = 155534148.

The previous prime is 164174929. The next prime is 164174963. The reversal of 164174953 is 359471461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 164174953 - 25 = 164174921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164174963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4320375 + ... + 4320412.

It is an arithmetic number, because the mean of its divisors is an integer number (43203940).

Almost surely, 2164174953 is an apocalyptic number.

It is an amenable number.

164174953 is a deficient number, since it is larger than the sum of its proper divisors (8640807).

164174953 is an equidigital number, since it uses as much as digits as its factorization.

164174953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8640806.

The product of its digits is 90720, while the sum is 40.

The square root of 164174953 is about 12813.0774211350. The cubic root of 164174953 is about 547.5649407619.

The spelling of 164174953 in words is "one hundred sixty-four million, one hundred seventy-four thousand, nine hundred fifty-three".

Divisors: 1 19 8640787 164174953