Search a number
-
+
2985581449 = 31316930391
BaseRepresentation
bin1011000111110100…
…0101101110001001
321201001220020210201
42301331011232021
522103302101244
61212131212201
7133662011044
oct26175055611
97631806721
102985581449
1112a2312594
126b3a47061
13387706756
14204731c5b
15127196ad4
hexb1f45b89

2985581449 has 8 divisors (see below), whose sum is σ = 3082964480. Its totient is φ = 2888265600.

The previous prime is 2985581437. The next prime is 2985581477. The reversal of 2985581449 is 9441855892.

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 2985581449 - 219 = 2985057161 is a prime.

It is a super-2 number, since 2×29855814492 = 17827393177225879202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2985581449.

It is not an unprimeable number, because it can be changed into a prime (2985581479) 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, 83044 + ... + 113434.

It is an arithmetic number, because the mean of its divisors is an integer number (385370560).

Almost surely, 22985581449 is an apocalyptic number.

It is an amenable number.

2985581449 is a deficient number, since it is larger than the sum of its proper divisors (97383031).

2985581449 is a wasteful number, since it uses less digits than its factorization.

2985581449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33591.

The product of its digits is 4147200, while the sum is 55.

The square root of 2985581449 is about 54640.4744580425. The cubic root of 2985581449 is about 1439.9352866044.

The spelling of 2985581449 in words is "two billion, nine hundred eighty-five million, five hundred eighty-one thousand, four hundred forty-nine".

Divisors: 1 31 3169 30391 98239 942121 96309079 2985581449