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2168339870 = 25216833987
BaseRepresentation
bin1000000100111110…
…0011110110011110
312121010010002010002
42001033203312132
513420043333440
6555055014302
7104506404404
oct20117436636
95533102102
102168339870
11a12a75924
1250620a392
132872c7b58
14167d99474
15ca566115
hex813e3d9e

2168339870 has 8 divisors (see below), whose sum is σ = 3903011784. Its totient is φ = 867335944.

The previous prime is 2168339839. The next prime is 2168339909. The reversal of 2168339870 is 789338612.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108416984 + ... + 108417003.

It is an arithmetic number, because the mean of its divisors is an integer number (487876473).

Almost surely, 22168339870 is an apocalyptic number.

2168339870 is a deficient number, since it is larger than the sum of its proper divisors (1734671914).

2168339870 is a wasteful number, since it uses less digits than its factorization.

2168339870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216833994.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 2168339870 is about 46565.4364308980. The cubic root of 2168339870 is about 1294.3223538314.

The spelling of 2168339870 in words is "two billion, one hundred sixty-eight million, three hundred thirty-nine thousand, eight hundred seventy".

Divisors: 1 2 5 10 216833987 433667974 1084169935 2168339870