19495093 has 2 divisors, whose sum is σ = 19495094. Its totient is φ = 19495092.

The previous prime is 19495087. The next prime is 19495139. The reversal of 19495093 is 39059491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18679684 + 815409 = 4322^2 + 903^2 .

It is a cyclic number.

It is not a de Polignac number, because 19495093 - 2⁵ = 19495061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19495013) 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, 9747546 + 9747547.

It is an arithmetic number, because the mean of its divisors is an integer number (9747547).

Almost surely, 2^19495093 is an apocalyptic number.

It is an amenable number.

19495093 is a deficient number, since it is larger than the sum of its proper divisors (1).

19495093 is an equidigital number, since it uses as much as digits as its factorization.

19495093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 19495093 is about 4415.3247898654. The cubic root of 19495093 is about 269.1380514246.

The spelling of 19495093 in words is "nineteen million, four hundred ninety-five thousand, ninety-three".