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3085851481 = 4616693821
BaseRepresentation
bin1011011111101110…
…0101101101011001
321222001120111102121
42313323211231121
522304434221411
61230112301241
7136320206356
oct26773455531
97861514377
103085851481
111343978989
12721541821
133a241312b
14213b9362d
15130da1571
hexb7ee5b59

3085851481 has 4 divisors (see below), whose sum is σ = 3092545764. Its totient is φ = 3079157200.

The previous prime is 3085851463. The next prime is 3085851491. The reversal of 3085851481 is 1841585803.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1841585803 = 2024990947.

It can be written as a sum of positive squares in 2 ways, for example, as 887742025 + 2198109456 = 29795^2 + 46884^2 .

It is a cyclic number.

It is not a de Polignac number, because 3085851481 - 29 = 3085850969 is a prime.

It is a super-3 number, since 3×30858514813 (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3085851451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3346450 + ... + 3347371.

It is an arithmetic number, because the mean of its divisors is an integer number (773136441).

Almost surely, 23085851481 is an apocalyptic number.

It is an amenable number.

3085851481 is a deficient number, since it is larger than the sum of its proper divisors (6694283).

3085851481 is an equidigital number, since it uses as much as digits as its factorization.

3085851481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6694282.

The product of its (nonzero) digits is 153600, while the sum is 43.

The square root of 3085851481 is about 55550.4408713378. The cubic root of 3085851481 is about 1455.8780780916.

The spelling of 3085851481 in words is "three billion, eighty-five million, eight hundred fifty-one thousand, four hundred eighty-one".

Divisors: 1 461 6693821 3085851481