197625619 has 2 divisors, whose sum is σ = 197625620. Its totient is φ = 197625618.

The previous prime is 197625581. The next prime is 197625643. The reversal of 197625619 is 916526791.

It is a strong prime.

It is an emirp because it is prime and its reverse (916526791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197625619 - 2¹⁷ = 197494547 is a prime.

It is a super-2 number, since 2×197625619² = 78111770570266322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (197625719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98812809 + 98812810.

It is an arithmetic number, because the mean of its divisors is an integer number (98812810).

Almost surely, 2^197625619 is an apocalyptic number.

197625619 is a deficient number, since it is larger than the sum of its proper divisors (1).

197625619 is an equidigital number, since it uses as much as digits as its factorization.

197625619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120, while the sum is 46.

The square root of 197625619 is about 14057.9379355580. The cubic root of 197625619 is about 582.4800845420.

The spelling of 197625619 in words is "one hundred ninety-seven million, six hundred twenty-five thousand, six hundred nineteen".