19106641 has 2 divisors, whose sum is σ = 19106642. Its totient is φ = 19106640.

The previous prime is 19106627. The next prime is 19106651. The reversal of 19106641 is 14660191.

It is the 1785-th star number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18671041 + 435600 = 4321^2 + 660^2 .

It is a cyclic number.

It is not a de Polignac number, because 19106641 - 2¹¹ = 19104593 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (19106611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9553320 + 9553321.

It is an arithmetic number, because the mean of its divisors is an integer number (9553321).

Almost surely, 2^19106641 is an apocalyptic number.

It is an amenable number.

19106641 is a deficient number, since it is larger than the sum of its proper divisors (1).

19106641 is an equidigital number, since it uses as much as digits as its factorization.

19106641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 19106641 is about 4371.1143888029. The cubic root of 19106641 is about 267.3384636272.

The spelling of 19106641 in words is "nineteen million, one hundred six thousand, six hundred forty-one".