197071493 has 2 divisors, whose sum is σ = 197071494. Its totient is φ = 197071492.

The previous prime is 197071489. The next prime is 197071529. The reversal of 197071493 is 394170791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146845924 + 50225569 = 12118^2 + 7087^2 .

It is a cyclic number.

It is not a de Polignac number, because 197071493 - 2² = 197071489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 197071493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197071403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98535746 + 98535747.

It is an arithmetic number, because the mean of its divisors is an integer number (98535747).

Almost surely, 2^197071493 is an apocalyptic number.

It is an amenable number.

197071493 is a deficient number, since it is larger than the sum of its proper divisors (1).

197071493 is an equidigital number, since it uses as much as digits as its factorization.

197071493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47628, while the sum is 41.

The square root of 197071493 is about 14038.2154492656. The cubic root of 197071493 is about 581.9351661540.

The spelling of 197071493 in words is "one hundred ninety-seven million, seventy-one thousand, four hundred ninety-three".