197830807 has 2 divisors, whose sum is σ = 197830808. Its totient is φ = 197830806.

The previous prime is 197830769. The next prime is 197830811. The reversal of 197830807 is 708038791.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 197830807 - 2²³ = 189442199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197830007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98915403 + 98915404.

It is an arithmetic number, because the mean of its divisors is an integer number (98915404).

Almost surely, 2^197830807 is an apocalyptic number.

197830807 is a deficient number, since it is larger than the sum of its proper divisors (1).

197830807 is an equidigital number, since it uses as much as digits as its factorization.

197830807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 197830807 is about 14065.2339831231. The cubic root of 197830807 is about 582.6816046085.

The spelling of 197830807 in words is "one hundred ninety-seven million, eight hundred thirty thousand, eight hundred seven".