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192963197809 = 533640815053
BaseRepresentation
bin1011001110110110000…
…0001011101101110001
3200110001221022002121001
42303231200023231301
511130142034312214
6224351315002001
716640544055504
oct2635540135561
9613057262531
10192963197809
11749207705a8
1231492b99301
13152724cc0b5
1494a770513b
1550457dac74
hex2ced80bb71

192963197809 has 4 divisors (see below), whose sum is σ = 196604012916. Its totient is φ = 189322382704.

The previous prime is 192963197789. The next prime is 192963197851. The reversal of 192963197809 is 908791369291.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 908791369291 = 1369907028407.

It can be written as a sum of positive squares in 2 ways, for example, as 85572630784 + 107390567025 = 292528^2 + 327705^2 .

It is a cyclic number.

It is not a de Polignac number, because 192963197809 - 219 = 192962673521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (192963197309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1820407474 + ... + 1820407579.

It is an arithmetic number, because the mean of its divisors is an integer number (49151003229).

Almost surely, 2192963197809 is an apocalyptic number.

It is an amenable number.

192963197809 is a deficient number, since it is larger than the sum of its proper divisors (3640815107).

192963197809 is an equidigital number, since it uses as much as digits as its factorization.

192963197809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3640815106.

The product of its (nonzero) digits is 13226976, while the sum is 64.

The spelling of 192963197809 in words is "one hundred ninety-two billion, nine hundred sixty-three million, one hundred ninety-seven thousand, eight hundred nine".

Divisors: 1 53 3640815053 192963197809