197049590401 has 2 divisors, whose sum is σ = 197049590402. Its totient is φ = 197049590400.

The previous prime is 197049590303. The next prime is 197049590407. The reversal of 197049590401 is 104095940791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194812773376 + 2236817025 = 441376^2 + 47295^2 .

It is a cyclic number.

It is not a de Polignac number, because 197049590401 - 2⁹ = 197049589889 is a prime.

It is not a weakly prime, because it can be changed into another prime (197049590407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98524795200 + 98524795201.

It is an arithmetic number, because the mean of its divisors is an integer number (98524795201).

Almost surely, 2^197049590401 is an apocalyptic number.

It is an amenable number.

197049590401 is a deficient number, since it is larger than the sum of its proper divisors (1).

197049590401 is an equidigital number, since it uses as much as digits as its factorization.

197049590401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 49.

The spelling of 197049590401 in words is "one hundred ninety-seven billion, forty-nine million, five hundred ninety thousand, four hundred one".