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6189613921 is a prime number
BaseRepresentation
bin1011100001110111…
…00000001101100001
3120222100211222002001
411300323200031201
5100134020121141
62502104524001
7306245564431
oct56073401541
916870758061
106189613921
11269696a607
121248a80601
1377845785a
1442a08a2c1
152635dea31
hex170ee0361

6189613921 has 2 divisors, whose sum is σ = 6189613922. Its totient is φ = 6189613920.

The previous prime is 6189613919. The next prime is 6189613939. The reversal of 6189613921 is 1293169816.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5176083025 + 1013530896 = 71945^2 + 31836^2 .

It is a cyclic number.

It is not a de Polignac number, because 6189613921 - 21 = 6189613919 is a prime.

It is a super-2 number, since 2×61896139212 = 76622640982073988482, which contains 22 as substring.

Together with 6189613919, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6189613961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3094806960 + 3094806961.

It is an arithmetic number, because the mean of its divisors is an integer number (3094806961).

Almost surely, 26189613921 is an apocalyptic number.

It is an amenable number.

6189613921 is a deficient number, since it is larger than the sum of its proper divisors (1).

6189613921 is an equidigital number, since it uses as much as digits as its factorization.

6189613921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 46.

The square root of 6189613921 is about 78674.0994292277. The cubic root of 6189613921 is about 1836.0641612126.

The spelling of 6189613921 in words is "six billion, one hundred eighty-nine million, six hundred thirteen thousand, nine hundred twenty-one".