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2106903839 = 3776174827
BaseRepresentation
bin111110110010100…
…1100110100011111
312102211111210201112
41331211030310133
513303331410324
6545022132235
7103132246535
oct17545146437
95384453645
102106903839
11991324047
124a972107b
13277667381
1415db66155
15c4e7cc0e
hex7d94cd1f

2106903839 has 8 divisors (see below), whose sum is σ = 2166719568. Its totient is φ = 2047239360.

The previous prime is 2106903829. The next prime is 2106903889. The reversal of 2106903839 is 9383096012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2106903839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2106903796 and 2106903805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2106903829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9257 + ... + 65570.

It is an arithmetic number, because the mean of its divisors is an integer number (270839946).

Almost surely, 22106903839 is an apocalyptic number.

2106903839 is a deficient number, since it is larger than the sum of its proper divisors (59815729).

2106903839 is an equidigital number, since it uses as much as digits as its factorization.

2106903839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75625.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 2106903839 is about 45901.0221999467. The cubic root of 2106903839 is about 1281.9809493917.

The spelling of 2106903839 in words is "two billion, one hundred six million, nine hundred three thousand, eight hundred thirty-nine".

Divisors: 1 37 761 28157 74827 2768599 56943347 2106903839