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168130497 = 31512111759
BaseRepresentation
bin10100000010101…
…11011111000001
3102201100220200110
422001113133001
5321020133442
624403341533
74111041243
oct1201273701
9381326613
10168130497
11869a5a27
12483818a9
1328aa9402
1418488093
15eb6169c
hexa0577c1

168130497 has 16 divisors (see below), whose sum is σ = 226856960. Its totient is φ = 110754000.

The previous prime is 168130477. The next prime is 168130499. The reversal of 168130497 is 794031861.

It is not a de Polignac number, because 168130497 - 26 = 168130433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168130499) 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 15 ways as a sum of consecutive naturals, for example, 94704 + ... + 96462.

It is an arithmetic number, because the mean of its divisors is an integer number (14178560).

Almost surely, 2168130497 is an apocalyptic number.

It is an amenable number.

168130497 is a deficient number, since it is larger than the sum of its proper divisors (58726463).

168130497 is a wasteful number, since it uses less digits than its factorization.

168130497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2124.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 168130497 is about 12966.5144506918. The cubic root of 168130497 is about 551.9276678747.

The spelling of 168130497 in words is "one hundred sixty-eight million, one hundred thirty thousand, four hundred ninety-seven".

Divisors: 1 3 151 211 453 633 1759 5277 31861 95583 265609 371149 796827 1113447 56043499 168130497