197086493 has 2 divisors, whose sum is σ = 197086494. Its totient is φ = 197086492.

The previous prime is 197086447. The next prime is 197086507. The reversal of 197086493 is 394680791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196504324 + 582169 = 14018^2 + 763^2 .

It is a cyclic number.

It is not a de Polignac number, because 197086493 - 2¹² = 197082397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197086433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98543246 + 98543247.

It is an arithmetic number, because the mean of its divisors is an integer number (98543247).

Almost surely, 2^197086493 is an apocalyptic number.

It is an amenable number.

197086493 is a deficient number, since it is larger than the sum of its proper divisors (1).

197086493 is an equidigital number, since it uses as much as digits as its factorization.

197086493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 197086493 is about 14038.7496950405. The cubic root of 197086493 is about 581.9499303493.

The spelling of 197086493 in words is "one hundred ninety-seven million, eighty-six thousand, four hundred ninety-three".