197219153 has 2 divisors, whose sum is σ = 197219154. Its totient is φ = 197219152.

The previous prime is 197219131. The next prime is 197219167. The reversal of 197219153 is 351912791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195664144 + 1555009 = 13988^2 + 1247^2 .

It is a cyclic number.

It is not a de Polignac number, because 197219153 - 2²⁶ = 130110289 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (197219653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98609576 + 98609577.

It is an arithmetic number, because the mean of its divisors is an integer number (98609577).

Almost surely, 2^197219153 is an apocalyptic number.

It is an amenable number.

197219153 is a deficient number, since it is larger than the sum of its proper divisors (1).

197219153 is an equidigital number, since it uses as much as digits as its factorization.

197219153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17010, while the sum is 38.

The square root of 197219153 is about 14043.4736799696. The cubic root of 197219153 is about 582.0804722948.

The spelling of 197219153 in words is "one hundred ninety-seven million, two hundred nineteen thousand, one hundred fifty-three".