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80189161 = 1313147087
BaseRepresentation
bin1001100011110…
…01011011101001
312120220000211221
410301321123221
5131012023121
611542422041
71662411433
oct461713351
9176800757
1080189161
11412a0338
1222a31921
13137c8510
14a915653
15708eb41
hex4c796e9

80189161 has 8 divisors (see below), whose sum is σ = 87018624. Its totient is φ = 73454160.

The previous prime is 80189149. The next prime is 80189209. The reversal of 80189161 is 16198108.

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

It is not a de Polignac number, because 80189161 - 25 = 80189129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80189111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21841 + ... + 25246.

It is an arithmetic number, because the mean of its divisors is an integer number (10877328).

Almost surely, 280189161 is an apocalyptic number.

It is an amenable number.

80189161 is a deficient number, since it is larger than the sum of its proper divisors (6829463).

80189161 is a wasteful number, since it uses less digits than its factorization.

80189161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47231.

The product of its (nonzero) digits is 3456, while the sum is 34.

The square root of 80189161 is about 8954.8400879078. The cubic root of 80189161 is about 431.2262832018.

The spelling of 80189161 in words is "eighty million, one hundred eighty-nine thousand, one hundred sixty-one".

Divisors: 1 13 131 1703 47087 612131 6168397 80189161