194100653 has 2 divisors, whose sum is σ = 194100654. Its totient is φ = 194100652.

The previous prime is 194100617. The next prime is 194100659. The reversal of 194100653 is 356001491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120604324 + 73496329 = 10982^2 + 8573^2 .

It is a cyclic number.

It is not a de Polignac number, because 194100653 - 2¹⁶ = 194035117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194100659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97050326 + 97050327.

It is an arithmetic number, because the mean of its divisors is an integer number (97050327).

Almost surely, 2^194100653 is an apocalyptic number.

It is an amenable number.

194100653 is a deficient number, since it is larger than the sum of its proper divisors (1).

194100653 is an equidigital number, since it uses as much as digits as its factorization.

194100653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 194100653 is about 13932.0010407694. The cubic root of 194100653 is about 578.9961360872.

Subtracting from 194100653 its sum of digits (29), we obtain a square (194100624 = 13932²).

The spelling of 194100653 in words is "one hundred ninety-four million, one hundred thousand, six hundred fifty-three".