197833813 has 2 divisors, whose sum is σ = 197833814. Its totient is φ = 197833812.

The previous prime is 197833807. The next prime is 197833817. The reversal of 197833813 is 318338791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117874449 + 79959364 = 10857^2 + 8942^2 .

It is a cyclic number.

It is not a de Polignac number, because 197833813 - 2²¹ = 195736661 is a prime.

It is a super-2 number, since 2×197833813² = 78276435132237938, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 197833813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197833817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98916906 + 98916907.

It is an arithmetic number, because the mean of its divisors is an integer number (98916907).

Almost surely, 2^197833813 is an apocalyptic number.

It is an amenable number.

197833813 is a deficient number, since it is larger than the sum of its proper divisors (1).

197833813 is an equidigital number, since it uses as much as digits as its factorization.

197833813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 43.

The square root of 197833813 is about 14065.3408419419. The cubic root of 197833813 is about 582.6845558375.

The spelling of 197833813 in words is "one hundred ninety-seven million, eight hundred thirty-three thousand, eight hundred thirteen".