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2171084669 = 131671000039
BaseRepresentation
bin1000000101101000…
…0001111101111101
312121022021112021022
42001122001331331
513421244202134
6555233513525
7104541625625
oct20132017575
95538245238
102171084669
11a14580056
125071128a5
13287a492b0
141684b1885
15ca90952e
hex81681f7d

2171084669 has 8 divisors (see below), whose sum is σ = 2352094080. Its totient is φ = 1992075696.

The previous prime is 2171084593. The next prime is 2171084687. The reversal of 2171084669 is 9664801712.

2171084669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a de Polignac number, because none of the positive numbers 2k-2171084669 is a prime.

It is a super-2 number, since 2×21710846692 = 9427217279933679122, which contains 22 as substring.

It is a Duffinian number.

2171084669 is a modest number, since divided by 84669 gives 2171 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2171084869) 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, 497849 + ... + 502190.

It is an arithmetic number, because the mean of its divisors is an integer number (294011760).

Almost surely, 22171084669 is an apocalyptic number.

It is an amenable number.

2171084669 is a deficient number, since it is larger than the sum of its proper divisors (181009411).

2171084669 is a wasteful number, since it uses less digits than its factorization.

2171084669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000219.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 2171084669 is about 46594.8996028535. The cubic root of 2171084669 is about 1294.8682640550.

The spelling of 2171084669 in words is "two billion, one hundred seventy-one million, eighty-four thousand, six hundred sixty-nine".

Divisors: 1 13 167 2171 1000039 13000507 167006513 2171084669