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163105153 = 947917207
BaseRepresentation
bin10011011100011…
…00100110000001
3102100220121012121
421232030212001
5313223331103
624103524241
74020241141
oct1156144601
9370817177
10163105153
1184083352
1246759681
1327a39c33
141793a921
15e4bc6bd
hex9b8c981

163105153 has 4 divisors (see below), whose sum is σ = 163131840. Its totient is φ = 163078468.

The previous prime is 163105147. The next prime is 163105169. The reversal of 163105153 is 351501361.

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, and also an emirpimes, since its reverse is a distinct semiprime: 351501361 = 1553226337.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-163105153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163105133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 876 + ... + 18082.

It is an arithmetic number, because the mean of its divisors is an integer number (40782960).

Almost surely, 2163105153 is an apocalyptic number.

It is an amenable number.

163105153 is a deficient number, since it is larger than the sum of its proper divisors (26687).

163105153 is an equidigital number, since it uses as much as digits as its factorization.

163105153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26686.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 163105153 is about 12771.2627801639. The cubic root of 163105153 is about 546.3729969302.

The spelling of 163105153 in words is "one hundred sixty-three million, one hundred five thousand, one hundred fifty-three".

Divisors: 1 9479 17207 163105153