197303893 has 2 divisors, whose sum is σ = 197303894. Its totient is φ = 197303892.

The previous prime is 197303891. The next prime is 197303927. The reversal of 197303893 is 398303791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 189943524 + 7360369 = 13782^2 + 2713^2 .

It is an emirp because it is prime and its reverse (398303791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197303893 - 2¹ = 197303891 is a prime.

Together with 197303891, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197303891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98651946 + 98651947.

It is an arithmetic number, because the mean of its divisors is an integer number (98651947).

Almost surely, 2^197303893 is an apocalyptic number.

It is an amenable number.

197303893 is a deficient number, since it is larger than the sum of its proper divisors (1).

197303893 is an equidigital number, since it uses as much as digits as its factorization.

197303893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 197303893 is about 14046.4904157587. The cubic root of 197303893 is about 582.1638286956.

The spelling of 197303893 in words is "one hundred ninety-seven million, three hundred three thousand, eight hundred ninety-three".