197965127 has 2 divisors, whose sum is σ = 197965128. Its totient is φ = 197965126.

The previous prime is 197965109. The next prime is 197965139. The reversal of 197965127 is 721569791.

It is a strong prime.

It is an emirp because it is prime and its reverse (721569791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197965127 - 2⁶ = 197965063 is a prime.

It is a super-2 number, since 2×197965127² = 78380383016252258, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197965147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98982563 + 98982564.

It is an arithmetic number, because the mean of its divisors is an integer number (98982564).

Almost surely, 2^197965127 is an apocalyptic number.

197965127 is a deficient number, since it is larger than the sum of its proper divisors (1).

197965127 is an equidigital number, since it uses as much as digits as its factorization.

197965127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 238140, while the sum is 47.

The square root of 197965127 is about 14070.0080668065. The cubic root of 197965127 is about 582.8134480555.

The spelling of 197965127 in words is "one hundred ninety-seven million, nine hundred sixty-five thousand, one hundred twenty-seven".