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2047209361 = 11338946573
BaseRepresentation
bin111101000000101…
…1110111110010001
312021200012000021221
41322001132332101
513143041144421
6535050445041
7101505664261
oct17201367621
95250160257
102047209361
1196066176a
12491733781
132681964b2
14155c677a1
15beada841
hex7a05ef91

2047209361 has 8 divisors (see below), whose sum is σ = 2070680040. Its totient is φ = 2023832832.

The previous prime is 2047209331. The next prime is 2047209407. The reversal of 2047209361 is 1639027402.

It can be written as a sum of positive squares in 4 ways, for example, as 354380625 + 1692828736 = 18825^2 + 41144^2 .

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 2047209361 - 27 = 2047209233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2047209301) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 20671 + ... + 67243.

It is an arithmetic number, because the mean of its divisors is an integer number (258835005).

Almost surely, 22047209361 is an apocalyptic number.

It is an amenable number.

2047209361 is a deficient number, since it is larger than the sum of its proper divisors (23470679).

2047209361 is a wasteful number, since it uses less digits than its factorization.

2047209361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47075.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 2047209361 is about 45246.0977433414. The cubic root of 2047209361 is about 1269.7574011159.

The spelling of 2047209361 in words is "two billion, forty-seven million, two hundred nine thousand, three hundred sixty-one".

Divisors: 1 113 389 43957 46573 5262749 18116897 2047209361