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2080013689 = 13193881941
BaseRepresentation
bin111101111111010…
…0111110101111001
312100221220122101001
41323332213311321
513224440414224
6542221525001
7102354552565
oct17376476571
95327818331
102080013689
11978128086
124a0713761
13271c10a40
1415a3666a5
15c291a544
hex7bfa7d79

2080013689 has 16 divisors (see below), whose sum is σ = 2256572304. Its totient is φ = 1905868800.

The previous prime is 2080013669. The next prime is 2080013693. The reversal of 2080013689 is 9863100802.

It can be written as a sum of positive squares in 8 ways, for example, as 388090000 + 1691923689 = 19700^2 + 41133^2 .

It is a cyclic number.

It is not a de Polignac number, because 2080013689 - 211 = 2080011641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2080013629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2209959 + ... + 2210899.

It is an arithmetic number, because the mean of its divisors is an integer number (141035769).

Almost surely, 22080013689 is an apocalyptic number.

It is an amenable number.

2080013689 is a deficient number, since it is larger than the sum of its proper divisors (176558615).

2080013689 is a wasteful number, since it uses less digits than its factorization.

2080013689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 2080013689 is about 45607.1670793089. The cubic root of 2080013689 is about 1276.5036600896.

The spelling of 2080013689 in words is "two billion, eighty million, thirteen thousand, six hundred eighty-nine".

Divisors: 1 13 193 881 941 2509 11453 12233 170033 181613 829021 2210429 2360969 10777273 160001053 2080013689