194810696653 has 2 divisors, whose sum is σ = 194810696654. Its totient is φ = 194810696652.

The previous prime is 194810696629. The next prime is 194810696657. The reversal of 194810696653 is 356696018491.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131146828164 + 63663868489 = 362142^2 + 252317^2 .

It is a cyclic number.

It is not a de Polignac number, because 194810696653 - 2²⁵ = 194777142221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194810696657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97405348326 + 97405348327.

It is an arithmetic number, because the mean of its divisors is an integer number (97405348327).

Almost surely, 2^194810696653 is an apocalyptic number.

It is an amenable number.

194810696653 is a deficient number, since it is larger than the sum of its proper divisors (1).

194810696653 is an equidigital number, since it uses as much as digits as its factorization.

194810696653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8398080, while the sum is 58.

The spelling of 194810696653 in words is "one hundred ninety-four billion, eight hundred ten million, six hundred ninety-six thousand, six hundred fifty-three".