197488619 has 2 divisors, whose sum is σ = 197488620. Its totient is φ = 197488618.

The previous prime is 197488591. The next prime is 197488661. The reversal of 197488619 is 916884791.

It is a weak prime.

It is an emirp because it is prime and its reverse (916884791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197488619 - 2¹² = 197484523 is a prime.

It is a super-2 number, since 2×197488619² = 78003509269054322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (197488699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98744309 + 98744310.

It is an arithmetic number, because the mean of its divisors is an integer number (98744310).

Almost surely, 2^197488619 is an apocalyptic number.

197488619 is a deficient number, since it is larger than the sum of its proper divisors (1).

197488619 is an equidigital number, since it uses as much as digits as its factorization.

197488619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 53.

The square root of 197488619 is about 14053.0643989131. The cubic root of 197488619 is about 582.3454558791.

The spelling of 197488619 in words is "one hundred ninety-seven million, four hundred eighty-eight thousand, six hundred nineteen".