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160870081 = 8911291601
BaseRepresentation
bin10011001011010…
…10111011000001
3102012201001021011
421211222323001
5312140320311
623544000521
73662241661
oct1145527301
9365631234
10160870081
1182897089
1245a60141
13274367c8
14175181a1
15e1ca321
hex996aec1

160870081 has 8 divisors (see below), whose sum is σ = 162923400. Its totient is φ = 158822400.

The previous prime is 160870057. The next prime is 160870091. The reversal of 160870081 is 180078061.

160870081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 18879025 + 141991056 = 4345^2 + 11916^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 160870081 - 27 = 160869953 is a prime.

It is a super-2 number, since 2×1608700812 = 51758365921893122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (160870091) 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, 99681 + ... + 101281.

It is an arithmetic number, because the mean of its divisors is an integer number (20365425).

Almost surely, 2160870081 is an apocalyptic number.

It is an amenable number.

160870081 is a deficient number, since it is larger than the sum of its proper divisors (2053319).

160870081 is a wasteful number, since it uses less digits than its factorization.

160870081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2819.

The product of its (nonzero) digits is 2688, while the sum is 31.

The square root of 160870081 is about 12683.4569814385. The cubic root of 160870081 is about 543.8658128969.

The spelling of 160870081 in words is "one hundred sixty million, eight hundred seventy thousand, eighty-one".

Divisors: 1 89 1129 1601 100481 142489 1807529 160870081