1908061 has 2 divisors, whose sum is σ = 1908062. Its totient is φ = 1908060.
The previous prime is 1908047. The next prime is 1908077. The reversal of 1908061 is 1608091.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 1907161 + 900 = 1381^2 + 30^2 .
It is a cyclic number.
It is not a de Polignac number, because 1908061 - 27 = 1907933 is a prime.
1908061 is a strobogrammatic number because it is the same when read upside-down.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1908031) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 954030 + 954031.
It is an arithmetic number, because the mean of its divisors is an integer number (954031).
21908061 is an apocalyptic number.
It is an amenable number.
1908061 is a deficient number, since it is larger than the sum of its proper divisors (1).
1908061 is an equidigital number, since it uses as much as digits as its factorization.
1908061 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 432, while the sum is 25.
The square root of 1908061 is about 1381.3258123991. The cubic root of 1908061 is about 124.0311446222.
The spelling of 1908061 in words is "one million, nine hundred eight thousand, sixty-one".
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