197753893 has 2 divisors, whose sum is σ = 197753894. Its totient is φ = 197753892.

The previous prime is 197753873. The next prime is 197753921. The reversal of 197753893 is 398357791.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137194369 + 60559524 = 11713^2 + 7782^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197753893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 197753893.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197753873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98876946 + 98876947.

It is an arithmetic number, because the mean of its divisors is an integer number (98876947).

Almost surely, 2^197753893 is an apocalyptic number.

It is an amenable number.

197753893 is a deficient number, since it is larger than the sum of its proper divisors (1).

197753893 is an equidigital number, since it uses as much as digits as its factorization.

197753893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1428840, while the sum is 52.

The square root of 197753893 is about 14062.4995288889. The cubic root of 197753893 is about 582.6060818543.

The spelling of 197753893 in words is "one hundred ninety-seven million, seven hundred fifty-three thousand, eight hundred ninety-three".