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4749471985 = 51755876141
BaseRepresentation
bin1000110110001011…
…10011000011110001
3110020222222011201211
410123011303003301
534211331100420
62103141400121
7225460563046
oct43305630361
913228864654
104749471985
112017a53665
12b06709041
135a8c92a6b
14330ac91cd
151cbe6ae5a
hex11b1730f1

4749471985 has 8 divisors (see below), whose sum is σ = 6034623336. Its totient is φ = 3576072960.

The previous prime is 4749471973. The next prime is 4749472031. The reversal of 4749471985 is 5891749474.

It can be written as a sum of positive squares in 4 ways, for example, as 33628401 + 4715843584 = 5799^2 + 68672^2 .

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

It is not a de Polignac number, because 4749471985 - 217 = 4749340913 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27937986 + ... + 27938155.

It is an arithmetic number, because the mean of its divisors is an integer number (754327917).

Almost surely, 24749471985 is an apocalyptic number.

It is an amenable number.

4749471985 is a deficient number, since it is larger than the sum of its proper divisors (1285151351).

4749471985 is a wasteful number, since it uses less digits than its factorization.

4749471985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55876163.

The product of its digits is 10160640, while the sum is 58.

The square root of 4749471985 is about 68916.4130305691. The cubic root of 4749471985 is about 1680.9254143039.

The spelling of 4749471985 in words is "four billion, seven hundred forty-nine million, four hundred seventy-one thousand, nine hundred eighty-five".

Divisors: 1 5 17 85 55876141 279380705 949894397 4749471985