Search a number
-
+
6945245841 = 317421323471
BaseRepresentation
bin1100111011111100…
…00000101010010001
3122221000201001012110
412131332000222101
5103210440331331
63105100415533
7334052421102
oct63576005221
918830631173
106945245841
112a44456aa6
121419b475a9
13868b74931
1449c5863a9
152a9b00946
hex19df80a91

6945245841 has 16 divisors (see below), whose sum is σ = 9828373248. Its totient is φ = 4347436800.

The previous prime is 6945245833. The next prime is 6945245843. The reversal of 6945245841 is 1485425496.

It is not a de Polignac number, because 6945245841 - 23 = 6945245833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6945245843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140265 + ... + 183206.

It is an arithmetic number, because the mean of its divisors is an integer number (614273328).

Almost surely, 26945245841 is an apocalyptic number.

It is an amenable number.

6945245841 is a deficient number, since it is larger than the sum of its proper divisors (2883127407).

6945245841 is a wasteful number, since it uses less digits than its factorization.

6945245841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323912.

The product of its digits is 1382400, while the sum is 48.

The square root of 6945245841 is about 83338.1415739516. The cubic root of 6945245841 is about 1907.9304577034.

The spelling of 6945245841 in words is "six billion, nine hundred forty-five million, two hundred forty-five thousand, eight hundred forty-one".

Divisors: 1 3 17 51 421 1263 7157 21471 323471 970413 5499007 16497021 136181291 408543873 2315081947 6945245841