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1320376643 is a prime number
BaseRepresentation
bin100111010110011…
…0101100101000011
310102000112002020122
41032230311211003
510201004023033
6335004130455
744502005405
oct11654654503
93360462218
101320376643
11618355573
1230a236a2b
13180720971
14c7506b75
157adb7a98
hex4eb35943

1320376643 has 2 divisors, whose sum is σ = 1320376644. Its totient is φ = 1320376642.

The previous prime is 1320376601. The next prime is 1320376657. The reversal of 1320376643 is 3466730231.

It is a strong prime.

It is an emirp because it is prime and its reverse (3466730231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1320376643 - 26 = 1320376579 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1320376693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660188321 + 660188322.

It is an arithmetic number, because the mean of its divisors is an integer number (660188322).

Almost surely, 21320376643 is an apocalyptic number.

1320376643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320376643 is an equidigital number, since it uses as much as digits as its factorization.

1320376643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 35.

The square root of 1320376643 is about 36336.9872581644. The cubic root of 1320376643 is about 1097.0656346048.

The spelling of 1320376643 in words is "one billion, three hundred twenty million, three hundred seventy-six thousand, six hundred forty-three".