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160963481 = 7218118149
BaseRepresentation
bin10011001100000…
…01101110011001
3102012212210101102
421212001232121
5312201312411
623550001145
73663111200
oct1146015631
9365783342
10160963481
1182950278
1245aa61b5
132746a183
1417540237
15e1e7d3b
hex9981b99

160963481 has 12 divisors (see below), whose sum is σ = 188288100. Its totient is φ = 137198880.

The previous prime is 160963457. The next prime is 160963487. The reversal of 160963481 is 184369061.

It can be written as a sum of positive squares in 2 ways, for example, as 17347225 + 143616256 = 4165^2 + 11984^2 .

It is not a de Polignac number, because 160963481 - 210 = 160962457 is a prime.

It is a super-2 number, since 2×1609634812 = 51818484431274722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (160963487) 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 11 ways as a sum of consecutive naturals, for example, 206 + ... + 17943.

It is an arithmetic number, because the mean of its divisors is an integer number (15690675).

Almost surely, 2160963481 is an apocalyptic number.

It is an amenable number.

160963481 is a deficient number, since it is larger than the sum of its proper divisors (27324619).

160963481 is a wasteful number, since it uses less digits than its factorization.

160963481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18344 (or 18337 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 160963481 is about 12687.1384086405. The cubic root of 160963481 is about 543.9710473796.

The spelling of 160963481 in words is "one hundred sixty million, nine hundred sixty-three thousand, four hundred eighty-one".

Divisors: 1 7 49 181 1267 8869 18149 127043 889301 3284969 22994783 160963481