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6481460861 = 191637208387
BaseRepresentation
bin1100000100101001…
…10011111001111101
3121201201000022210222
412002110303321331
5101233223221421
62551052111125
7316421336231
oct60224637175
917651008728
106481460861
112826685527
12130a7654a5
137c3a5c655
14456b3a5c1
1527e03ccab
hex182533e7d

6481460861 has 8 divisors (see below), whose sum is σ = 6826790880. Its totient is φ = 6136550928.

The previous prime is 6481460849. The next prime is 6481460863. The reversal of 6481460861 is 1680641846.

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 6481460861 - 214 = 6481444477 is a prime.

It is a super-2 number, since 2×64814608612 = 84018669785349722642, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6481460863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73091 + ... + 135296.

It is an arithmetic number, because the mean of its divisors is an integer number (853348860).

Almost surely, 26481460861 is an apocalyptic number.

It is an amenable number.

6481460861 is a deficient number, since it is larger than the sum of its proper divisors (345330019).

6481460861 is a wasteful number, since it uses less digits than its factorization.

6481460861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210043.

The product of its (nonzero) digits is 221184, while the sum is 44.

The square root of 6481460861 is about 80507.5205244827. The cubic root of 6481460861 is about 1864.4795928846.

The spelling of 6481460861 in words is "six billion, four hundred eighty-one million, four hundred sixty thousand, eight hundred sixty-one".

Divisors: 1 19 1637 31103 208387 3959353 341129519 6481460861